suggestions_source.cc revision cedac228d2dd51db4b79ea1e72c7f249408ee061
1a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)// Copyright 2014 The Chromium Authors. All rights reserved.
2a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be
3a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)// found in the LICENSE file.
4a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)
5a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)#include "chrome/browser/search/suggestions/suggestions_source.h"
6a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)
7a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)#include <vector>
8a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)
9cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)#include "base/barrier_closure.h"
10cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)#include "base/base64.h"
11a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)#include "base/bind.h"
12a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)#include "base/memory/ref_counted_memory.h"
13a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)#include "base/strings/string16.h"
14cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)#include "base/strings/string_piece.h"
15a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)#include "base/strings/string_util.h"
16a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)#include "chrome/browser/profiles/profile.h"
17a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)#include "chrome/browser/search/instant_io_context.h"
18a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)#include "chrome/browser/search/suggestions/suggestions_service.h"
19a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)#include "chrome/browser/search/suggestions/suggestions_service_factory.h"
20a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)#include "chrome/common/url_constants.h"
21a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)#include "net/base/escape.h"
22a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)#include "net/url_request/url_request.h"
23cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)#include "ui/gfx/codec/png_codec.h"
24cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)#include "ui/gfx/image/image_skia.h"
25a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)#include "url/gurl.h"
26a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)
27a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)namespace suggestions {
28a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)
29a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)namespace {
30a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)
31a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)const char kHtmlHeader[] =
32a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)    "<!DOCTYPE html>\n<html>\n<head>\n<title>Suggestions</title>\n"
33a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)    "<meta charset=\"utf-8\">\n"
34a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)    "<style type=\"text/css\">\nli {white-space: nowrap;}\n</style>\n";
35a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)const char kHtmlBody[] = "</head>\n<body>\n";
36a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)const char kHtmlFooter[] = "</body>\n</html>\n";
37a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)
38cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)// Fills |output| with the HTML needed to display the suggestions.
39cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)void RenderOutputHtml(const SuggestionsProfile& profile,
40cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)                      const std::map<GURL, std::string>& base64_encoded_pngs,
41cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)                      std::string* output) {
42cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)  std::vector<std::string> out;
43cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)  out.push_back(kHtmlHeader);
44cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)  out.push_back(kHtmlBody);
45cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)  out.push_back("<h1>Suggestions</h1>\n<ul>");
46cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)
47cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)  size_t size = profile.suggestions_size();
48cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)  for (size_t i = 0; i < size; ++i) {
49cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)    const ChromeSuggestion& suggestion = profile.suggestions(i);
50cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)    std::string line;
51cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)    line += "<li><a href=\"";
52cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)    line += net::EscapeForHTML(suggestion.url());
53cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)    line += "\" target=\"_blank\">";
54cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)    line += net::EscapeForHTML(suggestion.title());
55cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)    std::map<GURL, std::string>::const_iterator it =
56cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)        base64_encoded_pngs.find(GURL(suggestion.url()));
57cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)    if (it != base64_encoded_pngs.end()) {
58cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)      line += "<br><img src='";
59cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)      line += it->second;
60cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)      line += "'>";
61cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)    }
62cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)    line += "</a></li>\n";
63cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)    out.push_back(line);
64cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)  }
65cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)  out.push_back("</ul>");
66cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)  out.push_back(kHtmlFooter);
67cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)  *output = JoinString(out, "");
68cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)}
69cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)
70cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)// Fills |output| with the HTML needed to display that no suggestions are
71cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)// available.
72cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)void RenderOutputHtmlNoSuggestions(std::string* output) {
73cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)  std::vector<std::string> out;
74cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)  out.push_back(kHtmlHeader);
75cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)  out.push_back(kHtmlBody);
76cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)  out.push_back("<h1>Suggestions</h1>\n");
77cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)  out.push_back("<p>You have no suggestions.</p>\n");
78cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)  out.push_back(kHtmlFooter);
79cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)  *output = JoinString(out, "");
80cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)}
81cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)
82a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)}  // namespace
83a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)
84a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)SuggestionsSource::SuggestionsSource(Profile* profile)
85cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)    : profile_(profile), weak_ptr_factory_(this) {}
86a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)
87cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)SuggestionsSource::~SuggestionsSource() {}
88cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)
89cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)SuggestionsSource::RequestContext::RequestContext(
90cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)    const SuggestionsProfile& suggestions_profile_in,
91cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)    const content::URLDataSource::GotDataCallback& callback_in)
92cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)    : suggestions_profile(suggestions_profile_in),   // Copy.
93cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)      callback(callback_in)  // Copy.
94cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles){}
95cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)
96cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)SuggestionsSource::RequestContext::~RequestContext() {}
97a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)
98a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)std::string SuggestionsSource::GetSource() const {
99a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)  return chrome::kChromeUISuggestionsHost;
100a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)}
101a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)
102a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)void SuggestionsSource::StartDataRequest(
103cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)    const std::string& path, int render_process_id, int render_frame_id,
104a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)    const content::URLDataSource::GotDataCallback& callback) {
105a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)  SuggestionsServiceFactory* suggestions_service_factory =
106a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)      SuggestionsServiceFactory::GetInstance();
107a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)
108a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)  SuggestionsService* suggestions_service(
109a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)      suggestions_service_factory->GetForProfile(profile_));
110a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)
111010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles)  if (!suggestions_service) {
112010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles)    callback.Run(NULL);
113010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles)    return;
114010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles)  }
115a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)
116a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)  suggestions_service->FetchSuggestionsData(
117a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)      base::Bind(&SuggestionsSource::OnSuggestionsAvailable,
118a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)                 weak_ptr_factory_.GetWeakPtr(), callback));
119a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)}
120a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)
121a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)std::string SuggestionsSource::GetMimeType(const std::string& path) const {
122a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)  return "text/html";
123a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)}
124a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)
125a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)base::MessageLoop* SuggestionsSource::MessageLoopForRequestPath(
126a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)    const std::string& path) const {
127a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)  // This can be accessed from the IO thread.
128a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)  return content::URLDataSource::MessageLoopForRequestPath(path);
129a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)}
130a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)
131a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)bool SuggestionsSource::ShouldServiceRequest(
132a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)    const net::URLRequest* request) const {
133a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)  if (request->url().SchemeIs(chrome::kChromeSearchScheme))
134a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)    return InstantIOContext::ShouldServiceRequest(request);
135a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)  return URLDataSource::ShouldServiceRequest(request);
136a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)}
137a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)
138a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)void SuggestionsSource::OnSuggestionsAvailable(
139a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)    const content::URLDataSource::GotDataCallback& callback,
140a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)    const SuggestionsProfile& suggestions_profile) {
141a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)  size_t size = suggestions_profile.suggestions_size();
142cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)  if (!size) {
143cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)    std::string output;
144cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)    RenderOutputHtmlNoSuggestions(&output);
145cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)    callback.Run(base::RefCountedString::TakeString(&output));
146a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)  } else {
147cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)    RequestContext* context = new RequestContext(suggestions_profile, callback);
148cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)    base::Closure barrier = BarrierClosure(
149cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)        size, base::Bind(&SuggestionsSource::OnThumbnailsFetched,
150cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)                         weak_ptr_factory_.GetWeakPtr(), context));
151a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)    for (size_t i = 0; i < size; ++i) {
152a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)      const ChromeSuggestion& suggestion = suggestions_profile.suggestions(i);
153cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)      // Fetch the thumbnail for this URL (exercising the fetcher). After all
154cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)      // fetches are done, including NULL callbacks for unavailable thumbnails,
155cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)      // SuggestionsSource::OnThumbnailsFetched will be called.
156cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)      SuggestionsService* suggestions_service(
157cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)          SuggestionsServiceFactory::GetForProfile(profile_));
158cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)      suggestions_service->GetPageThumbnail(
159cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)          GURL(suggestion.url()),
160cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)          base::Bind(&SuggestionsSource::OnThumbnailAvailable,
161cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)                     weak_ptr_factory_.GetWeakPtr(), context, barrier));
162a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)    }
163a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)  }
164cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)}
165cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)
166cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)void SuggestionsSource::OnThumbnailsFetched(RequestContext* context) {
167cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)  scoped_ptr<RequestContext> context_deleter(context);
168a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)
169cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)  std::string output;
170cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)  RenderOutputHtml(context->suggestions_profile, context->base64_encoded_pngs,
171cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)                   &output);
172cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)  context->callback.Run(base::RefCountedString::TakeString(&output));
173cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)}
174cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)
175cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)void SuggestionsSource::OnThumbnailAvailable(RequestContext* context,
176cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)                                             base::Closure barrier,
177cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)                                             const GURL& url,
178cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)                                             const SkBitmap* bitmap) {
179cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)  if (bitmap) {
180cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)    std::vector<unsigned char> output;
181cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)    gfx::PNGCodec::EncodeBGRASkBitmap(*bitmap, false, &output);
182cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)
183cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)    std::string encoded_output;
184cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)    base::Base64Encode(std::string(output.begin(), output.end()),
185cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)                       &encoded_output);
186cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)    context->base64_encoded_pngs[url] = "data:image/png;base64,";
187cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)    context->base64_encoded_pngs[url] += encoded_output;
188cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)  }
189cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)  barrier.Run();
190a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)}
191a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)
192a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)}  // namespace suggestions
193