1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "content/browser/android/content_startup_flags.h"
6
7#include "base/base_switches.h"
8#include "base/command_line.h"
9#include "base/logging.h"
10#include "base/strings/string_number_conversions.h"
11#include "cc/base/switches.h"
12#include "content/public/browser/render_process_host.h"
13#include "content/public/common/content_constants.h"
14#include "content/public/common/content_switches.h"
15#include "gpu/command_buffer/service/gpu_switches.h"
16#include "ui/base/ui_base_switches.h"
17#include "ui/native_theme/native_theme_switches.h"
18
19namespace content {
20
21void SetContentCommandLineFlags(bool single_process,
22                                const std::string& plugin_descriptor) {
23  // May be called multiple times, to cover all possible program entry points.
24  static bool already_initialized = false;
25  if (already_initialized)
26    return;
27  already_initialized = true;
28
29  base::CommandLine* parsed_command_line =
30      base::CommandLine::ForCurrentProcess();
31
32  int command_line_renderer_limit = -1;
33  if (parsed_command_line->HasSwitch(switches::kRendererProcessLimit)) {
34    std::string limit = parsed_command_line->GetSwitchValueASCII(
35        switches::kRendererProcessLimit);
36    int value;
37    if (base::StringToInt(limit, &value)) {
38      command_line_renderer_limit = std::max(0, value);
39    }
40  }
41
42  if (command_line_renderer_limit > 0) {
43    int limit = std::min(command_line_renderer_limit,
44                         static_cast<int>(kMaxRendererProcessCount));
45    RenderProcessHost::SetMaxRendererProcessCount(limit);
46  }
47
48  if (single_process || command_line_renderer_limit == 0) {
49    // Need to ensure the command line flag is consistent as a lot of chrome
50    // internal code checks this directly, but it wouldn't normally get set when
51    // we are implementing an embedded WebView.
52    parsed_command_line->AppendSwitch(switches::kSingleProcess);
53  }
54
55  parsed_command_line->AppendSwitch(switches::kEnableBeginFrameScheduling);
56
57  parsed_command_line->AppendSwitch(switches::kEnablePinch);
58  parsed_command_line->AppendSwitch(switches::kEnableOverlayFullscreenVideo);
59  parsed_command_line->AppendSwitch(switches::kEnableOverlayScrollbar);
60  parsed_command_line->AppendSwitch(switches::kEnableOverscrollNotifications);
61  parsed_command_line->AppendSwitch(switches::kValidateInputEventStream);
62
63  // Run the GPU service as a thread in the browser instead of as a
64  // standalone process.
65  parsed_command_line->AppendSwitch(switches::kInProcessGPU);
66  parsed_command_line->AppendSwitch(switches::kDisableGpuShaderDiskCache);
67
68  parsed_command_line->AppendSwitch(switches::kEnableViewport);
69  parsed_command_line->AppendSwitch(switches::kEnableViewportMeta);
70  parsed_command_line->AppendSwitch(
71      switches::kMainFrameResizesAreOrientationChanges);
72
73  // Disable anti-aliasing.
74  parsed_command_line->AppendSwitch(
75      cc::switches::kDisableCompositedAntialiasing);
76
77  parsed_command_line->AppendSwitch(switches::kUIPrioritizeInGpuProcess);
78
79  parsed_command_line->AppendSwitch(switches::kEnableDelegatedRenderer);
80
81  if (!plugin_descriptor.empty()) {
82    parsed_command_line->AppendSwitchNative(
83      switches::kRegisterPepperPlugins, plugin_descriptor);
84  }
85
86  // Disable profiler timing by default.
87  if (!parsed_command_line->HasSwitch(switches::kProfilerTiming)) {
88    parsed_command_line->AppendSwitchASCII(
89        switches::kProfilerTiming, switches::kProfilerTimingDisabledValue);
90  }
91}
92
93}  // namespace content
94