variations_service.cc revision 116680a4aac90f2aa7413d9095a592090648e557
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "chrome/browser/metrics/variations/variations_service.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <set> 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/build_time.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/command_line.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/metrics/histogram.h" 12868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "base/metrics/sparse_histogram.h" 132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "base/prefs/pref_registry_simple.h" 142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "base/prefs/pref_service.h" 15010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles)#include "base/sys_info.h" 166d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles)#include "base/task_runner_util.h" 17cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)#include "base/timer/elapsed_timer.h" 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/version.h" 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "chrome/browser/browser_process.h" 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "chrome/common/chrome_switches.h" 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "chrome/common/pref_names.h" 2246d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#include "components/metrics/metrics_state_manager.h" 2346d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#include "components/network_time/network_time_tracker.h" 24cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)#include "components/pref_registry/pref_registry_syncable.h" 2558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "components/variations/proto/variations_seed.pb.h" 26424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles)#include "components/variations/variations_seed_processor.h" 27cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)#include "components/variations/variations_seed_simulator.h" 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "content/public/browser/browser_thread.h" 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/base/load_flags.h" 30868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "net/base/net_errors.h" 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/base/network_change_notifier.h" 322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "net/base/url_util.h" 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/http/http_response_headers.h" 342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "net/http/http_status_code.h" 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/http/http_util.h" 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/url_request/url_fetcher.h" 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/url_request/url_request_status.h" 38f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)#include "ui/base/device_form_factor.h" 39eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#include "url/gurl.h" 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 416d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles)#if !defined(OS_ANDROID) && !defined(OS_IOS) && !defined(OS_CHROMEOS) 426d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles)#include "chrome/browser/upgrade_detector_impl.h" 436d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles)#endif 446d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) 45c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#if defined(OS_CHROMEOS) 46c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#include "chrome/browser/chromeos/settings/cros_settings.h" 47c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#endif 48c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace chrome_variations { 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace { 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Default server of Variations seed info. 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const char kDefaultVariationsServerURL[] = 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "https://clients4.google.com/chrome-variations/seed"; 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const int kMaxRetrySeedFetch = 5; 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 582a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// TODO(mad): To be removed when we stop updating the NetworkTimeTracker. 592a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// For the HTTP date headers, the resolution of the server time is 1 second. 602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)const int64 kServerTimeResolutionMs = 1000; 612a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 622a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Wrapper around channel checking, used to enable channel mocking for 632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// testing. If the current browser channel is not UNKNOWN, this will return 642a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// that channel value. Otherwise, if the fake channel flag is provided, this 652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// will return the fake channel. Failing that, this will return the UNKNOWN 662a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// channel. 67ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben MurdochStudy_Channel GetChannelForVariations() { 68ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch switch (chrome::VersionInfo::GetChannel()) { 69ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch case chrome::VersionInfo::CHANNEL_CANARY: 70ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return Study_Channel_CANARY; 71ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch case chrome::VersionInfo::CHANNEL_DEV: 72ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return Study_Channel_DEV; 73ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch case chrome::VersionInfo::CHANNEL_BETA: 74ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return Study_Channel_BETA; 75ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch case chrome::VersionInfo::CHANNEL_STABLE: 76ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return Study_Channel_STABLE; 77ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch case chrome::VersionInfo::CHANNEL_UNKNOWN: 78ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch break; 79ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch } 80ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch const std::string forced_channel = 812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) CommandLine::ForCurrentProcess()->GetSwitchValueASCII( 822a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) switches::kFakeVariationsChannel); 832a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (forced_channel == "stable") 84ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return Study_Channel_STABLE; 85ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch if (forced_channel == "beta") 86ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return Study_Channel_BETA; 87ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch if (forced_channel == "dev") 88ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return Study_Channel_DEV; 89ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch if (forced_channel == "canary") 90ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return Study_Channel_CANARY; 91ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch DVLOG(1) << "Invalid channel provided: " << forced_channel; 92ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return Study_Channel_UNKNOWN; 932a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 942a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 95c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// Returns a string that will be used for the value of the 'osname' URL param 96c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// to the variations server. 97c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)std::string GetPlatformString() { 98c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#if defined(OS_WIN) 99c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return "win"; 10090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)#elif defined(OS_IOS) 10190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) return "ios"; 102c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#elif defined(OS_MACOSX) 103c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return "mac"; 104c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#elif defined(OS_CHROMEOS) 105c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return "chromeos"; 106c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#elif defined(OS_ANDROID) 107c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return "android"; 108c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#elif defined(OS_LINUX) || defined(OS_BSD) || defined(OS_SOLARIS) 109c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // Default BSD and SOLARIS to Linux to not break those builds, although these 110c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // platforms are not officially supported by Chrome. 111c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return "linux"; 112c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#else 113c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#error Unknown platform 114c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#endif 115c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)} 116c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 1176d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles)// Gets the version number to use for variations seed simulation. Must be called 1186d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles)// on a thread where IO is allowed. 1196d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles)base::Version GetVersionForSimulation() { 1206d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles)#if !defined(OS_ANDROID) && !defined(OS_IOS) && !defined(OS_CHROMEOS) 1216d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) const base::Version installed_version = 1226d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) UpgradeDetectorImpl::GetCurrentlyInstalledVersion(); 1236d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) if (installed_version.IsValid()) 1246d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) return installed_version; 1256d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles)#endif // !defined(OS_ANDROID) && !defined(OS_IOS) && !defined(OS_CHROMEOS) 1266d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) 1276d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) // TODO(asvitkine): Get the version that will be used on restart instead of 1286d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) // the current version on Android, iOS and ChromeOS. 1296d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) return base::Version(chrome::VersionInfo().Version()); 1306d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles)} 1316d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) 1325d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// Gets the restrict parameter from |policy_pref_service| or from Chrome OS 1335d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// settings in the case of that platform. 1345d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)std::string GetRestrictParameterPref(PrefService* policy_pref_service) { 135c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) std::string parameter; 136c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#if defined(OS_CHROMEOS) 137c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) chromeos::CrosSettings::Get()->GetString( 138c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) chromeos::kVariationsRestrictParameter, ¶meter); 139c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#else 1405d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (policy_pref_service) { 1415d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) parameter = 1425d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) policy_pref_service->GetString(prefs::kVariationsRestrictParameter); 1435d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) } 144c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#endif 145c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return parameter; 146c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)} 147c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 148868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)enum ResourceRequestsAllowedState { 149868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) RESOURCE_REQUESTS_ALLOWED, 150868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) RESOURCE_REQUESTS_NOT_ALLOWED, 151868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) RESOURCE_REQUESTS_ALLOWED_NOTIFIED, 152f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) RESOURCE_REQUESTS_NOT_ALLOWED_EULA_NOT_ACCEPTED, 153f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) RESOURCE_REQUESTS_NOT_ALLOWED_NETWORK_DOWN, 154f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) RESOURCE_REQUESTS_NOT_ALLOWED_COMMAND_LINE_DISABLED, 155868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) RESOURCE_REQUESTS_ALLOWED_ENUM_SIZE, 156868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)}; 157868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 158868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)// Records UMA histogram with the current resource requests allowed state. 159868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)void RecordRequestsAllowedHistogram(ResourceRequestsAllowedState state) { 160868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) UMA_HISTOGRAM_ENUMERATION("Variations.ResourceRequestsAllowed", state, 161868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) RESOURCE_REQUESTS_ALLOWED_ENUM_SIZE); 162868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)} 163868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 164f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)// Converts ResourceRequestAllowedNotifier::State to the corresponding 165f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)// ResourceRequestsAllowedState value. 166f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)ResourceRequestsAllowedState ResourceRequestStateToHistogramValue( 167f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) ResourceRequestAllowedNotifier::State state) { 168f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) switch (state) { 169f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) case ResourceRequestAllowedNotifier::DISALLOWED_EULA_NOT_ACCEPTED: 170f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) return RESOURCE_REQUESTS_NOT_ALLOWED_EULA_NOT_ACCEPTED; 171f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) case ResourceRequestAllowedNotifier::DISALLOWED_NETWORK_DOWN: 172f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) return RESOURCE_REQUESTS_NOT_ALLOWED_NETWORK_DOWN; 173f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) case ResourceRequestAllowedNotifier::DISALLOWED_COMMAND_LINE_DISABLED: 174f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) return RESOURCE_REQUESTS_NOT_ALLOWED_COMMAND_LINE_DISABLED; 175f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) case ResourceRequestAllowedNotifier::ALLOWED: 1765d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) return RESOURCE_REQUESTS_ALLOWED; 177f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) } 178f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) NOTREACHED(); 179f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) return RESOURCE_REQUESTS_NOT_ALLOWED; 180f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)} 181f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 1827dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 183010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles)// Gets current form factor and converts it from enum DeviceFormFactor to enum 184f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)// Study_FormFactor. 185f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)Study_FormFactor GetCurrentFormFactor() { 186f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) switch (ui::GetDeviceFormFactor()) { 187f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) case ui::DEVICE_FORM_FACTOR_PHONE: 188f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) return Study_FormFactor_PHONE; 189f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) case ui::DEVICE_FORM_FACTOR_TABLET: 190f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) return Study_FormFactor_TABLET; 191f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) case ui::DEVICE_FORM_FACTOR_DESKTOP: 192f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) return Study_FormFactor_DESKTOP; 193f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) } 194f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) NOTREACHED(); 195f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) return Study_FormFactor_DESKTOP; 196f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)} 197f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 198010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles)// Gets the hardware class and returns it as a string. This returns an empty 199010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles)// string if the client is not ChromeOS. 200010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles)std::string GetHardwareClass() { 201010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles)#if defined(OS_CHROMEOS) 202010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) return base::SysInfo::GetLsbReleaseBoard(); 203010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles)#endif // OS_CHROMEOS 204010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) return std::string(); 205010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles)} 206010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) 207a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch// Returns the date that should be used by the VariationsSeedProcessor to do 208a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch// expiry and start date checks. 209a02191e04bc25c4935f804f2c080ae28663d096dBen Murdochbase::Time GetReferenceDateForExpiryChecks(PrefService* local_state) { 210a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch const int64 date_value = local_state->GetInt64(prefs::kVariationsSeedDate); 211a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch const base::Time seed_date = base::Time::FromInternalValue(date_value); 212a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch const base::Time build_time = base::GetBuildTime(); 213a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch // Use the build time for date checks if either the seed date is invalid or 214a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch // the build time is newer than the seed date. 215a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch base::Time reference_date = seed_date; 216a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch if (seed_date.is_null() || seed_date < build_time) 217a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch reference_date = build_time; 218a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch return reference_date; 219a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch} 220a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch 2215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace 2225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 223cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)VariationsService::VariationsService( 224cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) ResourceRequestAllowedNotifier* notifier, 225cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) PrefService* local_state, 226cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) metrics::MetricsStateManager* state_manager) 227c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) : local_state_(local_state), 228cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) state_manager_(state_manager), 2295d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) policy_pref_service_(local_state), 2305d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) seed_store_(local_state), 2315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) create_trials_from_seed_called_(false), 2327d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) initial_request_completed_(false), 2336d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) resource_request_allowed_notifier_(notifier), 2346d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) weak_ptr_factory_(this) { 2355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) resource_request_allowed_notifier_->Init(this); 2365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)VariationsService::~VariationsService() { 2395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2412a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)bool VariationsService::CreateTrialsFromSeed() { 2425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) create_trials_from_seed_called_ = true; 2435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 24458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) VariationsSeed seed; 2455d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (!seed_store_.LoadSeed(&seed)) 2465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 2475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const chrome::VersionInfo current_version_info; 2495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!current_version_info.is_valid()) 2505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 2515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 252ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch const base::Version current_version(current_version_info.Version()); 253ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch if (!current_version.IsValid()) 254ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return false; 255ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 256558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch VariationsSeedProcessor().CreateTrialsFromSeed( 257a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch seed, g_browser_process->GetApplicationLocale(), 258a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch GetReferenceDateForExpiryChecks(local_state_), current_version, 259010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) GetChannelForVariations(), GetCurrentFormFactor(), GetHardwareClass()); 2602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2612a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Log the "freshness" of the seed that was just used. The freshness is the 2622a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // time between the last successful seed download and now. 2632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const int64 last_fetch_time_internal = 2642a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) local_state_->GetInt64(prefs::kVariationsLastFetchTime); 2652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (last_fetch_time_internal) { 2662a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const base::Time now = base::Time::Now(); 2672a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const base::TimeDelta delta = 2682a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) now - base::Time::FromInternalValue(last_fetch_time_internal); 2692a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Log the value in number of minutes. 2702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) UMA_HISTOGRAM_CUSTOM_COUNTS("Variations.SeedFreshness", delta.InMinutes(), 2712a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1, base::TimeDelta::FromDays(30).InMinutes(), 50); 2725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 2755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VariationsService::StartRepeatedVariationsSeedFetch() { 2785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI)); 2795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2805d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // Initialize the Variations server URL. 2815d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) variations_server_url_ = GetVariationsServerURL(policy_pref_service_); 2825d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 2835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Check that |CreateTrialsFromSeed| was called, which is necessary to 2845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // retrieve the serial number that will be sent to the server. 2855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(create_trials_from_seed_called_); 2865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 287c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) DCHECK(!request_scheduler_.get()); 288c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // Note that the act of instantiating the scheduler will start the fetch, if 289c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // the scheduler deems appropriate. Using Unretained is fine here since the 290c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // lifespan of request_scheduler_ is guaranteed to be shorter than that of 291c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // this service. 292c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) request_scheduler_.reset(VariationsRequestScheduler::Create( 293c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) base::Bind(&VariationsService::FetchVariationsSeed, 294c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) base::Unretained(this)), local_state_)); 295c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) request_scheduler_->Start(); 2962a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 2972a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 298116680a4aac90f2aa7413d9095a592090648e557Ben Murdochvoid VariationsService::AddObserver(Observer* observer) { 299116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch observer_list_.AddObserver(observer); 300116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch} 301116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch 302116680a4aac90f2aa7413d9095a592090648e557Ben Murdochvoid VariationsService::RemoveObserver(Observer* observer) { 303116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch observer_list_.RemoveObserver(observer); 304116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch} 305116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch 3065d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// TODO(rkaplow): Handle this and the similar event in metrics_service by 3075d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// observing an 'OnAppEnterForeground' event in RequestScheduler instead of 3085d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// requiring the frontend code to notify each service individually. Since the 3095d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// scheduler will handle it directly the VariationService shouldn't need to 3105d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// know details of this anymore. 3115d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void VariationsService::OnAppEnterForeground() { 3125d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) request_scheduler_->OnAppEnterForeground(); 3135d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)} 3145d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 315116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch#if defined(OS_WIN) 316116680a4aac90f2aa7413d9095a592090648e557Ben Murdochvoid VariationsService::StartGoogleUpdateRegistrySync() { 317116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch registry_syncer_.RequestRegistrySync(); 318116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch} 319116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch#endif 320116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch 321116680a4aac90f2aa7413d9095a592090648e557Ben Murdochvoid VariationsService::SetCreateTrialsFromSeedCalledForTesting(bool called) { 322116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch create_trials_from_seed_called_ = called; 323116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch} 324116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch 3255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 3265d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)GURL VariationsService::GetVariationsServerURL( 3275d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) PrefService* policy_pref_service) { 3282a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::string server_url_string(CommandLine::ForCurrentProcess()-> 3292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) GetSwitchValueASCII(switches::kVariationsServerURL)); 3302a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (server_url_string.empty()) 3312a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) server_url_string = kDefaultVariationsServerURL; 3322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) GURL server_url = GURL(server_url_string); 333c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 3345d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const std::string restrict_param = 3355d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) GetRestrictParameterPref(policy_pref_service); 336c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) if (!restrict_param.empty()) { 337c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) server_url = net::AppendOrReplaceQueryParameter(server_url, 338c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) "restrict", 339c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) restrict_param); 3402a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 341c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 342c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) server_url = net::AppendOrReplaceQueryParameter(server_url, "osname", 343c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) GetPlatformString()); 344c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 3452a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DCHECK(server_url.is_valid()); 3462a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return server_url; 3472a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 3482a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3492a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// static 3502a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)std::string VariationsService::GetDefaultVariationsServerURLForTesting() { 3512a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return kDefaultVariationsServerURL; 3522a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 3532a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3542a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// static 3552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void VariationsService::RegisterPrefs(PrefRegistrySimple* registry) { 3565d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) VariationsSeedStore::RegisterPrefs(registry); 3572a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) registry->RegisterInt64Pref(prefs::kVariationsLastFetchTime, 0); 3585d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // This preference will only be written by the policy service, which will fill 3595d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // it according to a value stored in the User Policy. 3602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) registry->RegisterStringPref(prefs::kVariationsRestrictParameter, 3612a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::string()); 3622a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 3632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3642a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// static 3655d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void VariationsService::RegisterProfilePrefs( 3665d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) user_prefs::PrefRegistrySyncable* registry) { 3675d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // This preference will only be written by the policy service, which will fill 3685d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // it according to a value stored in the User Policy. 3695d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) registry->RegisterStringPref( 3705d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) prefs::kVariationsRestrictParameter, 3715d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) std::string(), 3725d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 3735d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)} 3745d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 3755d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// static 376cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)scoped_ptr<VariationsService> VariationsService::Create( 377cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) PrefService* local_state, 378cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) metrics::MetricsStateManager* state_manager) { 379cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) scoped_ptr<VariationsService> result; 380c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#if !defined(GOOGLE_CHROME_BUILD) 3812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Unless the URL was provided, unsupported builds should return NULL to 3822a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // indicate that the service should not be used. 3832a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (!CommandLine::ForCurrentProcess()->HasSwitch( 384b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) switches::kVariationsServerURL)) { 385b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) DVLOG(1) << "Not creating VariationsService in unofficial build without --" 386b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) << switches::kVariationsServerURL << " specified."; 387cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) return result.Pass(); 388b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) } 3892a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#endif 390116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch result.reset(new VariationsService( 391116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch new ResourceRequestAllowedNotifier, local_state, state_manager)); 392cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) return result.Pass(); 3932a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 3942a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VariationsService::DoActualFetch() { 3965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pending_seed_request_.reset(net::URLFetcher::Create( 3972a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 0, variations_server_url_, net::URLFetcher::GET, this)); 3985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pending_seed_request_->SetLoadFlags(net::LOAD_DO_NOT_SEND_COOKIES | 3995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) net::LOAD_DO_NOT_SAVE_COOKIES); 4005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pending_seed_request_->SetRequestContext( 4015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) g_browser_process->system_request_context()); 4022a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) pending_seed_request_->SetMaxRetriesOn5xx(kMaxRetrySeedFetch); 4035d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (!seed_store_.variations_serial_number().empty()) { 4045d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) pending_seed_request_->AddExtraRequestHeader( 4055d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) "If-Match:" + seed_store_.variations_serial_number()); 4065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pending_seed_request_->Start(); 4085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 409868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) const base::TimeTicks now = base::TimeTicks::Now(); 410868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) base::TimeDelta time_since_last_fetch; 411868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) // Record a time delta of 0 (default value) if there was no previous fetch. 412868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) if (!last_request_started_time_.is_null()) 413868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) time_since_last_fetch = now - last_request_started_time_; 414868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) UMA_HISTOGRAM_CUSTOM_COUNTS("Variations.TimeSinceLastFetchAttempt", 415868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) time_since_last_fetch.InMinutes(), 0, 416868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) base::TimeDelta::FromDays(7).InMinutes(), 50); 417868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) last_request_started_time_ = now; 4185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 420a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)void VariationsService::StoreSeed(const std::string& seed_data, 421a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) const std::string& seed_signature, 422a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) const base::Time& date_fetched) { 4236d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) scoped_ptr<VariationsSeed> seed(new VariationsSeed); 424cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) if (!seed_store_.StoreSeedData(seed_data, seed_signature, date_fetched, 4256d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) seed.get())) { 426a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch return; 427cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) } 428a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch RecordLastFetchTime(); 429cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 430cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // Perform seed simulation only if |state_manager_| is not-NULL. The state 431cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // manager may be NULL for some unit tests. 432cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) if (!state_manager_) 433cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) return; 434cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 4356d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) base::PostTaskAndReplyWithResult( 4366d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) content::BrowserThread::GetBlockingPool(), 4376d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) FROM_HERE, 4386d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) base::Bind(&GetVersionForSimulation), 4396d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) base::Bind(&VariationsService::PerformSimulationWithVersion, 4406d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) weak_ptr_factory_.GetWeakPtr(), base::Passed(&seed))); 441a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)} 442a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) 4435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VariationsService::FetchVariationsSeed() { 4445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI)); 4455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 446f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) const ResourceRequestAllowedNotifier::State state = 447f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) resource_request_allowed_notifier_->GetResourceRequestsAllowedState(); 4485d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) RecordRequestsAllowedHistogram(ResourceRequestStateToHistogramValue(state)); 449f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) if (state != ResourceRequestAllowedNotifier::ALLOWED) { 4505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DVLOG(1) << "Resource requests were not allowed. Waiting for notification."; 4515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 4525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DoActualFetch(); 4555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 457116680a4aac90f2aa7413d9095a592090648e557Ben Murdochvoid VariationsService::NotifyObservers( 458116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch const VariationsSeedSimulator::Result& result) { 459116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch if (result.kill_critical_group_change_count > 0) { 460116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch FOR_EACH_OBSERVER(Observer, observer_list_, 461116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch OnExperimentChangesDetected(Observer::CRITICAL)); 462116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch } else if (result.kill_best_effort_group_change_count > 0) { 463116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch FOR_EACH_OBSERVER(Observer, observer_list_, 464116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch OnExperimentChangesDetected(Observer::BEST_EFFORT)); 465116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch } 466116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch} 467116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch 4685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VariationsService::OnURLFetchComplete(const net::URLFetcher* source) { 4695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK_EQ(pending_seed_request_.get(), source); 4707d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) 4717d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) const bool is_first_request = !initial_request_completed_; 4727d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) initial_request_completed_ = true; 4737d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) 4745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The fetcher will be deleted when the request is handled. 4752a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) scoped_ptr<const net::URLFetcher> request(pending_seed_request_.release()); 476868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) const net::URLRequestStatus& request_status = request->GetStatus(); 477868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) if (request_status.status() != net::URLRequestStatus::SUCCESS) { 478868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) UMA_HISTOGRAM_SPARSE_SLOWLY("Variations.FailedRequestErrorCode", 479868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) -request_status.error()); 480868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) DVLOG(1) << "Variations server request failed with error: " 481868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) << request_status.error() << ": " 482868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) << net::ErrorToString(request_status.error()); 4837d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) // It's common for the very first fetch attempt to fail (e.g. the network 4847d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) // may not yet be available). In such a case, try again soon, rather than 4857d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) // waiting the full time interval. 4867d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) if (is_first_request) 4877d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) request_scheduler_->ScheduleFetchShortly(); 4885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 4895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Log the response code. 4922a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const int response_code = request->GetResponseCode(); 493868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) UMA_HISTOGRAM_SPARSE_SLOWLY("Variations.SeedFetchResponseCode", 494868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) response_code); 4955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const base::TimeDelta latency = 4975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::TimeTicks::Now() - last_request_started_time_; 4985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4992a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::Time response_date; 5002a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (response_code == net::HTTP_OK || 5012a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) response_code == net::HTTP_NOT_MODIFIED) { 5022a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool success = request->GetResponseHeaders()->GetDateValue(&response_date); 5032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DCHECK(success || response_date.is_null()); 5042a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 5052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (!response_date.is_null()) { 506cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) g_browser_process->network_time_tracker()->UpdateNetworkTime( 5072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) response_date, 5082a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::TimeDelta::FromMilliseconds(kServerTimeResolutionMs), 509cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) latency, 510cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) base::TimeTicks::Now()); 5112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 5122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 5132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 5142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (response_code != net::HTTP_OK) { 5152a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DVLOG(1) << "Variations server request returned non-HTTP_OK response code: " 5162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) << response_code; 5172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (response_code == net::HTTP_NOT_MODIFIED) { 5182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) RecordLastFetchTime(); 519f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) // Update the seed date value in local state (used for expiry check on 520f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) // next start up), since 304 is a successful response. 521a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) seed_store_.UpdateSeedDateAndLogDayChange(response_date); 5222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 5235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 5245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 5255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string seed_data; 5275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool success = request->GetResponseAsString(&seed_data); 5285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(success); 5295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5305d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) std::string seed_signature; 5315d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) request->GetResponseHeaders()->EnumerateHeader(NULL, 5325d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) "X-Seed-Signature", 5335d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) &seed_signature); 534a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) StoreSeed(seed_data, seed_signature, response_date); 5355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VariationsService::OnResourceRequestsAllowed() { 5385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Note that this only attempts to fetch the seed at most once per period 5395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // (kSeedFetchPeriodHours). This works because 5405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // |resource_request_allowed_notifier_| only calls this method if an 5415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // attempt was made earlier that fails (which implies that the period had 5425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // elapsed). After a successful attempt is made, the notifier will know not 5435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // to call this method again until another failed attempt occurs. 544868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) RecordRequestsAllowedHistogram(RESOURCE_REQUESTS_ALLOWED_NOTIFIED); 5455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DVLOG(1) << "Retrying fetch."; 5465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DoActualFetch(); 547c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 548c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // This service must have created a scheduler in order for this to be called. 549c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) DCHECK(request_scheduler_.get()); 550c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) request_scheduler_->Reset(); 5515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5536d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles)void VariationsService::PerformSimulationWithVersion( 5546d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) scoped_ptr<VariationsSeed> seed, 5556d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) const base::Version& version) { 5566d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) if (version.IsValid()) 5576d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) return; 5586d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) 5596d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) const base::ElapsedTimer timer; 5606d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) 5616d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) scoped_ptr<const base::FieldTrial::EntropyProvider> entropy_provider = 5626d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) state_manager_->CreateEntropyProvider(); 5636d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) VariationsSeedSimulator seed_simulator(*entropy_provider); 5646d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) 5656d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) VariationsSeedSimulator::Result result = seed_simulator.SimulateSeedStudies( 5666d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) *seed, g_browser_process->GetApplicationLocale(), 5676d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) GetReferenceDateForExpiryChecks(local_state_), version, 5686d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) GetChannelForVariations(), GetCurrentFormFactor(), GetHardwareClass()); 5696d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) 5706d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) UMA_HISTOGRAM_COUNTS_100("Variations.SimulateSeed.NormalChanges", 5716d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) result.normal_group_change_count); 5726d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) UMA_HISTOGRAM_COUNTS_100("Variations.SimulateSeed.KillBestEffortChanges", 5736d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) result.kill_best_effort_group_change_count); 5746d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) UMA_HISTOGRAM_COUNTS_100("Variations.SimulateSeed.KillCriticalChanges", 5756d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) result.kill_critical_group_change_count); 5766d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) 5776d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) UMA_HISTOGRAM_TIMES("Variations.SimulateSeed.Duration", timer.Elapsed()); 578116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch 579116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch NotifyObservers(result); 5806d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles)} 5816d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) 5822a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void VariationsService::RecordLastFetchTime() { 5832a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // local_state_ is NULL in tests, so check it first. 5842a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (local_state_) { 5852a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) local_state_->SetInt64(prefs::kVariationsLastFetchTime, 5862a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::Time::Now().ToInternalValue()); 5872a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 5882a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 5892a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 5905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace chrome_variations 591