chrome/renderer/chrome_content_renderer_client.cc

   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 "chrome/renderer/chrome_content_renderer_client.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/debug/crash_logging.h"
   9 #include "base/logging.h"
  10 #include "base/metrics/histogram.h"
  11 #include "base/metrics/user_metrics_action.h"
  12 #include "base/path_service.h"
  13 #include "base/strings/string_number_conversions.h"
  14 #include "base/strings/string_util.h"
  15 #include "base/strings/utf_string_conversions.h"
  16 #include "base/values.h"
  17 #include "chrome/common/chrome_content_client.h"
  18 #include "chrome/common/chrome_paths.h"
  19 #include "chrome/common/chrome_switches.h"
  20 #include "chrome/common/content_settings_pattern.h"
  21 #include "chrome/common/crash_keys.h"
  22 #include "chrome/common/extensions/chrome_extensions_client.h"
  23 #include "chrome/common/extensions/extension_constants.h"
  24 #include "chrome/common/extensions/extension_process_policy.h"
  25 #include "chrome/common/localized_error.h"
  26 #include "chrome/common/pepper_permission_util.h"
  27 #include "chrome/common/render_messages.h"
  28 #include "chrome/common/url_constants.h"
  29 #include "chrome/renderer/benchmarking_extension.h"
  30 #include "chrome/renderer/chrome_render_frame_observer.h"
  31 #include "chrome/renderer/chrome_render_process_observer.h"
  32 #include "chrome/renderer/chrome_render_view_observer.h"
  33 #include "chrome/renderer/content_settings_observer.h"
  34 #include "chrome/renderer/extensions/chrome_extension_helper.h"
  35 #include "chrome/renderer/extensions/chrome_extensions_dispatcher_delegate.h"
  36 #include "chrome/renderer/extensions/chrome_extensions_renderer_client.h"
  37 #include "chrome/renderer/extensions/extension_frame_helper.h"
  38 #include "chrome/renderer/extensions/renderer_permissions_policy_delegate.h"
  39 #include "chrome/renderer/extensions/resource_request_policy.h"
  40 #include "chrome/renderer/external_extension.h"
  41 #include "chrome/renderer/loadtimes_extension_bindings.h"
  42 #include "chrome/renderer/media/cast_ipc_dispatcher.h"
  43 #include "chrome/renderer/media/chrome_key_systems.h"
  44 #include "chrome/renderer/net/net_error_helper.h"
  45 #include "chrome/renderer/net/prescient_networking_dispatcher.h"
  46 #include "chrome/renderer/net/renderer_net_predictor.h"
  47 #include "chrome/renderer/net_benchmarking_extension.h"
  48 #include "chrome/renderer/page_load_histograms.h"
  49 #include "chrome/renderer/pepper/pepper_helper.h"
  50 #include "chrome/renderer/pepper/ppb_pdf_impl.h"
  51 #include "chrome/renderer/playback_extension.h"
  52 #include "chrome/renderer/plugins/chrome_plugin_placeholder.h"
  53 #include "chrome/renderer/plugins/plugin_uma.h"
  54 #include "chrome/renderer/prerender/prerender_dispatcher.h"
  55 #include "chrome/renderer/prerender/prerender_helper.h"
  56 #include "chrome/renderer/prerender/prerender_media_load_deferrer.h"
  57 #include "chrome/renderer/prerender/prerenderer_client.h"
  58 #include "chrome/renderer/principals_extension_bindings.h"
  59 #include "chrome/renderer/printing/print_web_view_helper.h"
  60 #include "chrome/renderer/safe_browsing/malware_dom_details.h"
  61 #include "chrome/renderer/safe_browsing/phishing_classifier_delegate.h"
  62 #include "chrome/renderer/searchbox/search_bouncer.h"
  63 #include "chrome/renderer/searchbox/searchbox.h"
  64 #include "chrome/renderer/searchbox/searchbox_extension.h"
  65 #include "chrome/renderer/tts_dispatcher.h"
  66 #include "chrome/renderer/worker_permission_client_proxy.h"
  67 #include "components/autofill/content/renderer/autofill_agent.h"
  68 #include "components/autofill/content/renderer/password_autofill_agent.h"
  69 #include "components/autofill/content/renderer/password_generation_agent.h"
  70 #include "components/nacl/renderer/ppb_nacl_private_impl.h"
  71 #include "components/plugins/renderer/mobile_youtube_plugin.h"
  72 #include "components/signin/core/common/profile_management_switches.h"
  73 #include "components/visitedlink/renderer/visitedlink_slave.h"
  74 #include "content/public/common/content_constants.h"
  75 #include "content/public/renderer/render_frame.h"
  76 #include "content/public/renderer/render_thread.h"
  77 #include "content/public/renderer/render_view.h"
  78 #include "content/public/renderer/render_view_visitor.h"
  79 #include "extensions/common/constants.h"
  80 #include "extensions/common/extension.h"
  81 #include "extensions/common/extension_set.h"
  82 #include "extensions/common/extension_urls.h"
  83 #include "extensions/common/switches.h"
  84 #include "extensions/renderer/dispatcher.h"
  85 #include "extensions/renderer/extension_helper.h"
  86 #include "extensions/renderer/script_context.h"
  87 #include "grit/generated_resources.h"
  88 #include "grit/locale_settings.h"
  89 #include "grit/renderer_resources.h"
  90 #include "ipc/ipc_sync_channel.h"
  91 #include "net/base/net_errors.h"
  92 #include "ppapi/c/private/ppb_nacl_private.h"
  93 #include "ppapi/c/private/ppb_pdf.h"
  94 #include "ppapi/shared_impl/ppapi_switches.h"
  95 #include "third_party/WebKit/public/platform/WebURL.h"
  96 #include "third_party/WebKit/public/platform/WebURLError.h"
  97 #include "third_party/WebKit/public/platform/WebURLRequest.h"
  98 #include "third_party/WebKit/public/web/WebCache.h"
  99 #include "third_party/WebKit/public/web/WebDataSource.h"
 100 #include "third_party/WebKit/public/web/WebDocument.h"
 101 #include "third_party/WebKit/public/web/WebElement.h"
 102 #include "third_party/WebKit/public/web/WebLocalFrame.h"
 103 #include "third_party/WebKit/public/web/WebPluginContainer.h"
 104 #include "third_party/WebKit/public/web/WebPluginParams.h"
 105 #include "third_party/WebKit/public/web/WebSecurityOrigin.h"
 106 #include "third_party/WebKit/public/web/WebSecurityPolicy.h"
 107 #include "ui/base/l10n/l10n_util.h"
 108 #include "ui/base/layout.h"
 109 #include "ui/base/resource/resource_bundle.h"
 110 #include "ui/base/webui/jstemplate_builder.h"
 111 #include "widevine_cdm_version.h"  // In SHARED_INTERMEDIATE_DIR.
 112
 113 #if !defined(DISABLE_NACL)
 114 #include "components/nacl/renderer/nacl_helper.h"
 115 #endif
 116
 117 #if defined(ENABLE_WEBRTC)
 118 #include "chrome/renderer/media/webrtc_logging_message_filter.h"
 119 #endif
 120
 121 #if defined(ENABLE_SPELLCHECK)
 122 #include "chrome/renderer/spellchecker/spellcheck.h"
 123 #include "chrome/renderer/spellchecker/spellcheck_provider.h"
 124 #endif
 125
 126 #if defined(OS_WIN)
 127 #include "chrome_elf/blacklist/blacklist.h"
 128 #endif  // OS_WIN
 129
 130 using autofill::AutofillAgent;
 131 using autofill::PasswordAutofillAgent;
 132 using autofill::PasswordGenerationAgent;
 133 using base::ASCIIToUTF16;
 134 using base::UserMetricsAction;
 135 using content::RenderThread;
 136 using content::WebPluginInfo;
 137 using extensions::Extension;
 138 using blink::WebCache;
 139 using blink::WebConsoleMessage;
 140 using blink::WebDataSource;
 141 using blink::WebDocument;
 142 using blink::WebFrame;
 143 using blink::WebLocalFrame;
 144 using blink::WebPlugin;
 145 using blink::WebPluginParams;
 146 using blink::WebSecurityOrigin;
 147 using blink::WebSecurityPolicy;
 148 using blink::WebString;
 149 using blink::WebURL;
 150 using blink::WebURLError;
 151 using blink::WebURLRequest;
 152 using blink::WebURLResponse;
 153 using blink::WebVector;
 154
 155 namespace {
 156
 157 const char kWebViewTagName[] = "WEBVIEW";
 158 const char kAdViewTagName[] = "ADVIEW";
 159
 160 ChromeContentRendererClient* g_current_client;
 161
 162 static void AppendParams(const std::vector<base::string16>& additional_names,
 163                          const std::vector<base::string16>& additional_values,
 164                          WebVector<WebString>* existing_names,
 165                          WebVector<WebString>* existing_values) {
 166   DCHECK(additional_names.size() == additional_values.size());
 167   DCHECK(existing_names->size() == existing_values->size());
 168
 169   size_t existing_size = existing_names->size();
 170   size_t total_size = existing_size + additional_names.size();
 171
 172   WebVector<WebString> names(total_size);
 173   WebVector<WebString> values(total_size);
 174
 175   for (size_t i = 0; i < existing_size; ++i) {
 176     names[i] = (*existing_names)[i];
 177     values[i] = (*existing_values)[i];
 178   }
 179
 180   for (size_t i = 0; i < additional_names.size(); ++i) {
 181     names[existing_size + i] = additional_names[i];
 182     values[existing_size + i] = additional_values[i];
 183   }
 184
 185   existing_names->swap(names);
 186   existing_values->swap(values);
 187 }
 188
 189 #if defined(ENABLE_SPELLCHECK)
 190 class SpellCheckReplacer : public content::RenderViewVisitor {
 191  public:
 192   explicit SpellCheckReplacer(SpellCheck* spellcheck)
 193       : spellcheck_(spellcheck) {}
 194   virtual bool Visit(content::RenderView* render_view) OVERRIDE;
 195
 196  private:
 197   SpellCheck* spellcheck_;  // New shared spellcheck for all views. Weak Ptr.
 198   DISALLOW_COPY_AND_ASSIGN(SpellCheckReplacer);
 199 };
 200
 201 bool SpellCheckReplacer::Visit(content::RenderView* render_view) {
 202   SpellCheckProvider* provider = SpellCheckProvider::Get(render_view);
 203   DCHECK(provider);
 204   provider->set_spellcheck(spellcheck_);
 205   return true;
 206 }
 207 #endif
 208
 209 // For certain sandboxed Pepper plugins, use the JavaScript Content Settings.
 210 bool ShouldUseJavaScriptSettingForPlugin(const WebPluginInfo& plugin) {
 211   if (plugin.type != WebPluginInfo::PLUGIN_TYPE_PEPPER_IN_PROCESS &&
 212       plugin.type != WebPluginInfo::PLUGIN_TYPE_PEPPER_OUT_OF_PROCESS) {
 213     return false;
 214   }
 215
 216   // Treat Native Client invocations like JavaScript.
 217   if (plugin.name == ASCIIToUTF16(ChromeContentClient::kNaClPluginName))
 218     return true;
 219
 220 #if defined(WIDEVINE_CDM_AVAILABLE) && defined(ENABLE_PEPPER_CDMS)
 221   // Treat CDM invocations like JavaScript.
 222   if (plugin.name == ASCIIToUTF16(kWidevineCdmDisplayName)) {
 223     DCHECK(plugin.type == WebPluginInfo::PLUGIN_TYPE_PEPPER_OUT_OF_PROCESS);
 224     return true;
 225   }
 226 #endif  // defined(WIDEVINE_CDM_AVAILABLE) && defined(ENABLE_PEPPER_CDMS)
 227
 228   return false;
 229 }
 230
 231 }  // namespace
 232
 233 ChromeContentRendererClient::ChromeContentRendererClient() {
 234   g_current_client = this;
 235
 236   extensions::ExtensionsClient::Set(
 237       extensions::ChromeExtensionsClient::GetInstance());
 238   extensions::ExtensionsRendererClient::Set(
 239       ChromeExtensionsRendererClient::GetInstance());
 240 }
 241
 242 ChromeContentRendererClient::~ChromeContentRendererClient() {
 243   g_current_client = NULL;
 244 }
 245
 246 void ChromeContentRendererClient::RenderThreadStarted() {
 247   RenderThread* thread = RenderThread::Get();
 248
 249   chrome_observer_.reset(new ChromeRenderProcessObserver(this));
 250
 251   extension_dispatcher_delegate_.reset(
 252       new ChromeExtensionsDispatcherDelegate());
 253   // ChromeRenderViewTest::SetUp() creates its own ExtensionDispatcher and
 254   // injects it using SetExtensionDispatcher(). Don't overwrite it.
 255   if (!extension_dispatcher_) {
 256     extension_dispatcher_.reset(
 257         new extensions::Dispatcher(extension_dispatcher_delegate_.get()));
 258   }
 259   permissions_policy_delegate_.reset(
 260       new extensions::RendererPermissionsPolicyDelegate(
 261           extension_dispatcher_.get()));
 262   prescient_networking_dispatcher_.reset(new PrescientNetworkingDispatcher());
 263   net_predictor_.reset(new RendererNetPredictor());
 264 #if defined(ENABLE_SPELLCHECK)
 265   // ChromeRenderViewTest::SetUp() creates a Spellcheck and injects it using
 266   // SetSpellcheck(). Don't overwrite it.
 267   if (!spellcheck_) {
 268     spellcheck_.reset(new SpellCheck());
 269     thread->AddObserver(spellcheck_.get());
 270   }
 271 #endif
 272   visited_link_slave_.reset(new visitedlink::VisitedLinkSlave());
 273 #if defined(FULL_SAFE_BROWSING)
 274   phishing_classifier_.reset(safe_browsing::PhishingClassifierFilter::Create());
 275 #endif
 276   prerender_dispatcher_.reset(new prerender::PrerenderDispatcher());
 277 #if defined(ENABLE_WEBRTC)
 278   webrtc_logging_message_filter_ = new WebRtcLoggingMessageFilter(
 279       content::RenderThread::Get()->GetIOMessageLoopProxy());
 280 #endif
 281   search_bouncer_.reset(new SearchBouncer());
 282
 283   thread->AddObserver(chrome_observer_.get());
 284   thread->AddObserver(extension_dispatcher_.get());
 285 #if defined(FULL_SAFE_BROWSING)
 286   thread->AddObserver(phishing_classifier_.get());
 287 #endif
 288   thread->AddObserver(visited_link_slave_.get());
 289   thread->AddObserver(prerender_dispatcher_.get());
 290   thread->AddObserver(search_bouncer_.get());
 291
 292 #if defined(ENABLE_WEBRTC)
 293   thread->AddFilter(webrtc_logging_message_filter_.get());
 294 #endif
 295   thread->AddFilter(new CastIPCDispatcher(
 296       content::RenderThread::Get()->GetIOMessageLoopProxy()));
 297
 298   thread->RegisterExtension(extensions_v8::ExternalExtension::Get());
 299   thread->RegisterExtension(extensions_v8::LoadTimesExtension::Get());
 300
 301   CommandLine* command_line = CommandLine::ForCurrentProcess();
 302   if (command_line->HasSwitch(switches::kEnableBenchmarking))
 303     thread->RegisterExtension(extensions_v8::BenchmarkingExtension::Get());
 304   if (command_line->HasSwitch(switches::kEnableNetBenchmarking))
 305     thread->RegisterExtension(extensions_v8::NetBenchmarkingExtension::Get());
 306   if (command_line->HasSwitch(switches::kInstantProcess))
 307     thread->RegisterExtension(extensions_v8::SearchBoxExtension::Get());
 308
 309   if (command_line->HasSwitch(switches::kPlaybackMode) ||
 310       command_line->HasSwitch(switches::kRecordMode)) {
 311     thread->RegisterExtension(extensions_v8::PlaybackExtension::Get());
 312   }
 313
 314   // TODO(guohui): needs to forward the new-profile-management switch to
 315   // renderer processes.
 316   if (switches::IsNewProfileManagement())
 317     thread->RegisterExtension(extensions_v8::PrincipalsExtension::Get());
 318
 319   // chrome:, chrome-search:, chrome-devtools:, and chrome-distiller: pages
 320   // should not be accessible by normal content, and should also be unable to
 321   // script anything but themselves (to help limit the damage that a corrupt
 322   // page could cause).
 323   WebString chrome_ui_scheme(ASCIIToUTF16(content::kChromeUIScheme));
 324   WebSecurityPolicy::registerURLSchemeAsDisplayIsolated(chrome_ui_scheme);
 325
 326   WebString chrome_search_scheme(ASCIIToUTF16(chrome::kChromeSearchScheme));
 327   // The Instant process can only display the content but not read it.  Other
 328   // processes can't display it or read it.
 329   if (!command_line->HasSwitch(switches::kInstantProcess))
 330     WebSecurityPolicy::registerURLSchemeAsDisplayIsolated(chrome_search_scheme);
 331
 332   WebString dev_tools_scheme(ASCIIToUTF16(content::kChromeDevToolsScheme));
 333   WebSecurityPolicy::registerURLSchemeAsDisplayIsolated(dev_tools_scheme);
 334
 335   WebString dom_distiller_scheme(ASCIIToUTF16(chrome::kDomDistillerScheme));
 336   // TODO(nyquist): Add test to ensure this happens when the flag is set.
 337   WebSecurityPolicy::registerURLSchemeAsDisplayIsolated(dom_distiller_scheme);
 338
 339 #if defined(OS_CHROMEOS)
 340   WebString drive_scheme(ASCIIToUTF16(chrome::kDriveScheme));
 341   WebSecurityPolicy::registerURLSchemeAsLocal(drive_scheme);
 342 #endif
 343
 344   // chrome: and chrome-search: pages should not be accessible by bookmarklets
 345   // or javascript: URLs typed in the omnibox.
 346   WebSecurityPolicy::registerURLSchemeAsNotAllowingJavascriptURLs(
 347       chrome_ui_scheme);
 348   WebSecurityPolicy::registerURLSchemeAsNotAllowingJavascriptURLs(
 349       chrome_search_scheme);
 350
 351   // chrome:, chrome-search:, and chrome-extension: resources shouldn't trigger
 352   // insecure content warnings.
 353   WebSecurityPolicy::registerURLSchemeAsSecure(chrome_ui_scheme);
 354   WebSecurityPolicy::registerURLSchemeAsSecure(chrome_search_scheme);
 355
 356   WebString extension_scheme(ASCIIToUTF16(extensions::kExtensionScheme));
 357   WebSecurityPolicy::registerURLSchemeAsSecure(extension_scheme);
 358
 359   // chrome-extension: resources should be allowed to receive CORS requests.
 360   WebSecurityPolicy::registerURLSchemeAsCORSEnabled(extension_scheme);
 361
 362   WebString extension_resource_scheme(
 363       ASCIIToUTF16(extensions::kExtensionResourceScheme));
 364   WebSecurityPolicy::registerURLSchemeAsSecure(extension_resource_scheme);
 365
 366   // chrome-extension-resource: resources should be allowed to receive CORS
 367   // requests.
 368   WebSecurityPolicy::registerURLSchemeAsCORSEnabled(extension_resource_scheme);
 369
 370   // chrome-extension: resources should bypass Content Security Policy checks
 371   // when included in protected resources.
 372   WebSecurityPolicy::registerURLSchemeAsBypassingContentSecurityPolicy(
 373       extension_scheme);
 374   WebSecurityPolicy::registerURLSchemeAsBypassingContentSecurityPolicy(
 375       extension_resource_scheme);
 376
 377 #if defined(OS_WIN)
 378   // Report if the renderer process has been patched by chrome_elf.
 379   // TODO(csharp): Remove once the renderer is no longer getting
 380   // patched this way.
 381   if (blacklist::IsBlacklistInitialized())
 382     UMA_HISTOGRAM_BOOLEAN("Blacklist.PatchedInRenderer", true);
 383 #endif
 384 }
 385
 386 void ChromeContentRendererClient::RenderFrameCreated(
 387     content::RenderFrame* render_frame) {
 388   new ChromeRenderFrameObserver(render_frame);
 389
 390   ContentSettingsObserver* content_settings =
 391       new ContentSettingsObserver(render_frame, extension_dispatcher_.get());
 392   if (chrome_observer_.get()) {
 393     content_settings->SetContentSettingRules(
 394         chrome_observer_->content_setting_rules());
 395   }
 396
 397   new extensions::ExtensionFrameHelper(render_frame,
 398                                        extension_dispatcher_.get());
 399
 400 #if defined(ENABLE_PLUGINS)
 401   new PepperHelper(render_frame);
 402 #endif
 403
 404 #if !defined(DISABLE_NACL)
 405   new nacl::NaClHelper(render_frame);
 406 #endif
 407
 408   // TODO(jam): when the frame tree moves into content and parent() works at
 409   // RenderFrame construction, simplify this by just checking parent().
 410   if (render_frame->GetRenderView()->GetMainRenderFrame() != render_frame) {
 411     // Avoid any race conditions from having the browser tell subframes that
 412     // they're prerendering.
 413     if (prerender::PrerenderHelper::IsPrerendering(
 414             render_frame->GetRenderView()->GetMainRenderFrame())) {
 415       new prerender::PrerenderHelper(render_frame);
 416     }
 417   }
 418
 419   if (render_frame->GetRenderView()->GetMainRenderFrame() == render_frame) {
 420     // Only attach NetErrorHelper to the main frame, since only the main frame
 421     // should get error pages.
 422     new NetErrorHelper(render_frame);
 423   }
 424 }
 425
 426 void ChromeContentRendererClient::RenderViewCreated(
 427     content::RenderView* render_view) {
 428   new extensions::ExtensionHelper(render_view, extension_dispatcher_.get());
 429   new extensions::ChromeExtensionHelper(render_view);
 430   new PageLoadHistograms(render_view);
 431 #if defined(ENABLE_PRINTING)
 432   new printing::PrintWebViewHelper(render_view);
 433 #endif
 434 #if defined(ENABLE_SPELLCHECK)
 435   new SpellCheckProvider(render_view, spellcheck_.get());
 436 #endif
 437   new prerender::PrerendererClient(render_view);
 438 #if defined(FULL_SAFE_BROWSING)
 439   safe_browsing::MalwareDOMDetails::Create(render_view);
 440 #endif
 441
 442   PasswordGenerationAgent* password_generation_agent =
 443       new PasswordGenerationAgent(render_view);
 444   PasswordAutofillAgent* password_autofill_agent =
 445       new PasswordAutofillAgent(render_view);
 446   new AutofillAgent(render_view,
 447                     password_autofill_agent,
 448                     password_generation_agent);
 449
 450   CommandLine* command_line = CommandLine::ForCurrentProcess();
 451   if (command_line->HasSwitch(switches::kInstantProcess))
 452     new SearchBox(render_view);
 453
 454   new ChromeRenderViewObserver(render_view, chrome_observer_.get());
 455 }
 456
 457 void ChromeContentRendererClient::SetNumberOfViews(int number_of_views) {
 458   base::debug::SetCrashKeyValue(crash_keys::kNumberOfViews,
 459                                 base::IntToString(number_of_views));
 460 }
 461
 462 SkBitmap* ChromeContentRendererClient::GetSadPluginBitmap() {
 463   return const_cast<SkBitmap*>(ResourceBundle::GetSharedInstance().
 464       GetImageNamed(IDR_SAD_PLUGIN).ToSkBitmap());
 465 }
 466
 467 SkBitmap* ChromeContentRendererClient::GetSadWebViewBitmap() {
 468   return const_cast<SkBitmap*>(ResourceBundle::GetSharedInstance().
 469       GetImageNamed(IDR_SAD_WEBVIEW).ToSkBitmap());
 470 }
 471
 472 std::string ChromeContentRendererClient::GetDefaultEncoding() {
 473   return l10n_util::GetStringUTF8(IDS_DEFAULT_ENCODING);
 474 }
 475
 476 const Extension* ChromeContentRendererClient::GetExtensionByOrigin(
 477     const WebSecurityOrigin& origin) const {
 478   if (!EqualsASCII(origin.protocol(), extensions::kExtensionScheme))
 479     return NULL;
 480
 481   const std::string extension_id = origin.host().utf8().data();
 482   return extension_dispatcher_->extensions()->GetByID(extension_id);
 483 }
 484
 485 bool ChromeContentRendererClient::OverrideCreatePlugin(
 486     content::RenderFrame* render_frame,
 487     WebLocalFrame* frame,
 488     const WebPluginParams& params,
 489     WebPlugin** plugin) {
 490   std::string orig_mime_type = params.mimeType.utf8();
 491   if (orig_mime_type == content::kBrowserPluginMimeType) {
 492     WebDocument document = frame->document();
 493     const Extension* extension =
 494         GetExtensionByOrigin(document.securityOrigin());
 495     if (extension) {
 496       const extensions::APIPermission::ID perms[] = {
 497         extensions::APIPermission::kWebView,
 498         extensions::APIPermission::kAdView
 499       };
 500       for (size_t i = 0; i < arraysize(perms); ++i) {
 501         if (extension->HasAPIPermission(perms[i]))
 502           return false;
 503       }
 504     }
 505   }
 506
 507   ChromeViewHostMsg_GetPluginInfo_Output output;
 508 #if defined(ENABLE_PLUGINS)
 509   render_frame->Send(new ChromeViewHostMsg_GetPluginInfo(
 510       render_frame->GetRoutingID(), GURL(params.url),
 511       frame->top()->document().url(), orig_mime_type, &output));
 512
 513   if (output.plugin.type == content::WebPluginInfo::PLUGIN_TYPE_BROWSER_PLUGIN)
 514     return false;
 515 #else
 516   output.status.value = ChromeViewHostMsg_GetPluginInfo_Status::kNotFound;
 517 #endif
 518   *plugin = CreatePlugin(render_frame, frame, params, output);
 519   return true;
 520 }
 521
 522 WebPlugin* ChromeContentRendererClient::CreatePluginReplacement(
 523     content::RenderFrame* render_frame,
 524     const base::FilePath& plugin_path) {
 525   ChromePluginPlaceholder* placeholder =
 526       ChromePluginPlaceholder::CreateErrorPlugin(render_frame, plugin_path);
 527   return placeholder->plugin();
 528 }
 529
 530 void ChromeContentRendererClient::DeferMediaLoad(
 531     content::RenderFrame* render_frame,
 532     const base::Closure& closure) {
 533 #if defined(OS_ANDROID)
 534   // Chromium for Android doesn't support prerender yet.
 535   closure.Run();
 536   return;
 537 #else
 538   if (!prerender::PrerenderHelper::IsPrerendering(render_frame)) {
 539     closure.Run();
 540     return;
 541   }
 542
 543   // Lifetime is tied to |render_frame| via content::RenderFrameObserver.
 544   new prerender::PrerenderMediaLoadDeferrer(render_frame, closure);
 545 #endif
 546 }
 547
 548 WebPlugin* ChromeContentRendererClient::CreatePlugin(
 549     content::RenderFrame* render_frame,
 550     WebLocalFrame* frame,
 551     const WebPluginParams& original_params,
 552     const ChromeViewHostMsg_GetPluginInfo_Output& output) {
 553   const ChromeViewHostMsg_GetPluginInfo_Status& status = output.status;
 554   const WebPluginInfo& plugin = output.plugin;
 555   const std::string& actual_mime_type = output.actual_mime_type;
 556   const base::string16& group_name = output.group_name;
 557   const std::string& identifier = output.group_identifier;
 558   ChromeViewHostMsg_GetPluginInfo_Status::Value status_value = status.value;
 559   GURL url(original_params.url);
 560   std::string orig_mime_type = original_params.mimeType.utf8();
 561   ChromePluginPlaceholder* placeholder = NULL;
 562
 563   // If the browser plugin is to be enabled, this should be handled by the
 564   // renderer, so the code won't reach here due to the early exit in
 565   // OverrideCreatePlugin.
 566   if (status_value == ChromeViewHostMsg_GetPluginInfo_Status::kNotFound ||
 567       orig_mime_type == content::kBrowserPluginMimeType) {
 568 #if defined(OS_ANDROID)
 569     if (plugins::MobileYouTubePlugin::IsYouTubeURL(url, orig_mime_type)) {
 570       base::StringPiece template_html(
 571           ResourceBundle::GetSharedInstance().GetRawDataResource(
 572               IDR_MOBILE_YOUTUBE_PLUGIN_HTML));
 573       return (new plugins::MobileYouTubePlugin(
 574                   render_frame,
 575                   frame,
 576                   original_params,
 577                   template_html,
 578                   GURL(ChromePluginPlaceholder::kPluginPlaceholderDataURL)))
 579           ->plugin();
 580     }
 581 #endif
 582     PluginUMAReporter::GetInstance()->ReportPluginMissing(orig_mime_type, url);
 583     placeholder = ChromePluginPlaceholder::CreateMissingPlugin(
 584         render_frame, frame, original_params);
 585   } else {
 586     // TODO(bauerb): This should be in content/.
 587     WebPluginParams params(original_params);
 588     for (size_t i = 0; i < plugin.mime_types.size(); ++i) {
 589       if (plugin.mime_types[i].mime_type == actual_mime_type) {
 590         AppendParams(plugin.mime_types[i].additional_param_names,
 591                      plugin.mime_types[i].additional_param_values,
 592                      &params.attributeNames,
 593                      &params.attributeValues);
 594         break;
 595       }
 596     }
 597     if (params.mimeType.isNull() && (actual_mime_type.size() > 0)) {
 598       // Webkit might say that mime type is null while we already know the
 599       // actual mime type via ChromeViewHostMsg_GetPluginInfo. In that case
 600       // we should use what we know since WebpluginDelegateProxy does some
 601       // specific initializations based on this information.
 602       params.mimeType = WebString::fromUTF8(actual_mime_type.c_str());
 603     }
 604
 605     ContentSettingsObserver* observer =
 606         ContentSettingsObserver::Get(render_frame);
 607
 608     const ContentSettingsType content_type =
 609         ShouldUseJavaScriptSettingForPlugin(plugin) ?
 610             CONTENT_SETTINGS_TYPE_JAVASCRIPT :
 611             CONTENT_SETTINGS_TYPE_PLUGINS;
 612
 613     if ((status_value ==
 614              ChromeViewHostMsg_GetPluginInfo_Status::kUnauthorized ||
 615          status_value == ChromeViewHostMsg_GetPluginInfo_Status::kClickToPlay ||
 616          status_value == ChromeViewHostMsg_GetPluginInfo_Status::kBlocked) &&
 617         observer->IsPluginTemporarilyAllowed(identifier)) {
 618       status_value = ChromeViewHostMsg_GetPluginInfo_Status::kAllowed;
 619     }
 620
 621     // Allow full-page plug-ins for click-to-play.
 622     if (status_value == ChromeViewHostMsg_GetPluginInfo_Status::kClickToPlay &&
 623         !frame->parent() &&
 624         !frame->opener() &&
 625         frame->document().isPluginDocument()) {
 626       status_value = ChromeViewHostMsg_GetPluginInfo_Status::kAllowed;
 627     }
 628
 629 #if defined(OS_WIN)
 630     // In Windows we need to check if we can load NPAPI plugins.
 631     // For example, if the render view is in the Ash desktop, we should not.
 632     if (status_value == ChromeViewHostMsg_GetPluginInfo_Status::kAllowed &&
 633         plugin.type == content::WebPluginInfo::PLUGIN_TYPE_NPAPI) {
 634         if (observer->AreNPAPIPluginsBlocked())
 635           status_value =
 636               ChromeViewHostMsg_GetPluginInfo_Status::kNPAPINotSupported;
 637     }
 638 #endif
 639
 640     switch (status_value) {
 641       case ChromeViewHostMsg_GetPluginInfo_Status::kNotFound: {
 642         NOTREACHED();
 643         break;
 644       }
 645       case ChromeViewHostMsg_GetPluginInfo_Status::kAllowed: {
 646         const bool is_nacl_plugin =
 647             plugin.name == ASCIIToUTF16(ChromeContentClient::kNaClPluginName);
 648         const bool is_nacl_mime_type =
 649             actual_mime_type == "application/x-nacl";
 650         const bool is_pnacl_mime_type =
 651             actual_mime_type == "application/x-pnacl";
 652         if (is_nacl_plugin || is_nacl_mime_type || is_pnacl_mime_type) {
 653           bool is_nacl_unrestricted = false;
 654           if (is_nacl_mime_type) {
 655             is_nacl_unrestricted =
 656                 CommandLine::ForCurrentProcess()->HasSwitch(
 657                     switches::kEnableNaCl);
 658           } else if (is_pnacl_mime_type) {
 659             is_nacl_unrestricted =
 660                 !CommandLine::ForCurrentProcess()->HasSwitch(
 661                     switches::kDisablePnacl);
 662           }
 663           GURL manifest_url;
 664           GURL app_url;
 665           if (is_nacl_mime_type || is_pnacl_mime_type) {
 666             // Normal NaCl/PNaCl embed. The app URL is the page URL.
 667             manifest_url = url;
 668             app_url = frame->top()->document().url();
 669           } else {
 670             // NaCl is being invoked as a content handler. Look up the NaCl
 671             // module using the MIME type. The app URL is the manifest URL.
 672             manifest_url = GetNaClContentHandlerURL(actual_mime_type, plugin);
 673             app_url = manifest_url;
 674           }
 675           const Extension* extension =
 676               g_current_client->extension_dispatcher_->extensions()->
 677                   GetExtensionOrAppByURL(manifest_url);
 678           if (!IsNaClAllowed(manifest_url,
 679                              app_url,
 680                              is_nacl_unrestricted,
 681                              extension,
 682                              &params)) {
 683             WebString error_message;
 684             if (is_nacl_mime_type) {
 685               error_message =
 686                   "Only unpacked extensions and apps installed from the Chrome "
 687                   "Web Store can load NaCl modules without enabling Native "
 688                   "Client in about:flags.";
 689             } else if (is_pnacl_mime_type) {
 690               error_message =
 691                   "Portable Native Client must not be disabled in about:flags.";
 692             }
 693             frame->addMessageToConsole(
 694                 WebConsoleMessage(WebConsoleMessage::LevelError,
 695                                   error_message));
 696             placeholder = ChromePluginPlaceholder::CreateBlockedPlugin(
 697                 render_frame,
 698                 frame,
 699                 params,
 700                 plugin,
 701                 identifier,
 702                 group_name,
 703                 IDR_BLOCKED_PLUGIN_HTML,
 704   #if defined(OS_CHROMEOS)
 705                 l10n_util::GetStringUTF16(IDS_NACL_PLUGIN_BLOCKED));
 706   #else
 707                 l10n_util::GetStringFUTF16(IDS_PLUGIN_BLOCKED, group_name));
 708   #endif
 709             break;
 710           }
 711         }
 712
 713         // Delay loading plugins if prerendering.
 714         // TODO(mmenke):  In the case of prerendering, feed into
 715         //                ChromeContentRendererClient::CreatePlugin instead, to
 716         //                reduce the chance of future regressions.
 717         if (prerender::PrerenderHelper::IsPrerendering(render_frame)) {
 718           placeholder = ChromePluginPlaceholder::CreateBlockedPlugin(
 719               render_frame,
 720               frame,
 721               params,
 722               plugin,
 723               identifier,
 724               group_name,
 725               IDR_CLICK_TO_PLAY_PLUGIN_HTML,
 726               l10n_util::GetStringFUTF16(IDS_PLUGIN_LOAD, group_name));
 727           placeholder->set_blocked_for_prerendering(true);
 728           placeholder->set_allow_loading(true);
 729           break;
 730         }
 731
 732         return render_frame->CreatePlugin(frame, plugin, params);
 733       }
 734       case ChromeViewHostMsg_GetPluginInfo_Status::kNPAPINotSupported: {
 735         RenderThread::Get()->RecordAction(
 736             UserMetricsAction("Plugin_NPAPINotSupported"));
 737         placeholder = ChromePluginPlaceholder::CreateBlockedPlugin(
 738             render_frame,
 739             frame,
 740             params,
 741             plugin,
 742             identifier,
 743             group_name,
 744             IDR_BLOCKED_PLUGIN_HTML,
 745             l10n_util::GetStringUTF16(IDS_PLUGIN_NOT_SUPPORTED_METRO));
 746         render_frame->Send(new ChromeViewHostMsg_NPAPINotSupported(
 747             render_frame->GetRoutingID(), identifier));
 748         break;
 749       }
 750       case ChromeViewHostMsg_GetPluginInfo_Status::kDisabled: {
 751         PluginUMAReporter::GetInstance()->ReportPluginDisabled(orig_mime_type,
 752                                                                url);
 753         placeholder = ChromePluginPlaceholder::CreateBlockedPlugin(
 754             render_frame,
 755             frame,
 756             params,
 757             plugin,
 758             identifier,
 759             group_name,
 760             IDR_DISABLED_PLUGIN_HTML,
 761             l10n_util::GetStringFUTF16(IDS_PLUGIN_DISABLED, group_name));
 762         break;
 763       }
 764       case ChromeViewHostMsg_GetPluginInfo_Status::kOutdatedBlocked: {
 765 #if defined(ENABLE_PLUGIN_INSTALLATION)
 766         placeholder = ChromePluginPlaceholder::CreateBlockedPlugin(
 767             render_frame,
 768             frame,
 769             params,
 770             plugin,
 771             identifier,
 772             group_name,
 773             IDR_BLOCKED_PLUGIN_HTML,
 774             l10n_util::GetStringFUTF16(IDS_PLUGIN_OUTDATED, group_name));
 775         placeholder->set_allow_loading(true);
 776         render_frame->Send(new ChromeViewHostMsg_BlockedOutdatedPlugin(
 777             render_frame->GetRoutingID(), placeholder->CreateRoutingId(),
 778             identifier));
 779 #else
 780         NOTREACHED();
 781 #endif
 782         break;
 783       }
 784       case ChromeViewHostMsg_GetPluginInfo_Status::kOutdatedDisallowed: {
 785         placeholder = ChromePluginPlaceholder::CreateBlockedPlugin(
 786             render_frame,
 787             frame,
 788             params,
 789             plugin,
 790             identifier,
 791             group_name,
 792             IDR_BLOCKED_PLUGIN_HTML,
 793             l10n_util::GetStringFUTF16(IDS_PLUGIN_OUTDATED, group_name));
 794         break;
 795       }
 796       case ChromeViewHostMsg_GetPluginInfo_Status::kUnauthorized: {
 797         placeholder = ChromePluginPlaceholder::CreateBlockedPlugin(
 798             render_frame,
 799             frame,
 800             params,
 801             plugin,
 802             identifier,
 803             group_name,
 804             IDR_BLOCKED_PLUGIN_HTML,
 805             l10n_util::GetStringFUTF16(IDS_PLUGIN_NOT_AUTHORIZED, group_name));
 806         placeholder->set_allow_loading(true);
 807         render_frame->Send(new ChromeViewHostMsg_BlockedUnauthorizedPlugin(
 808             render_frame->GetRoutingID(),
 809             group_name,
 810             identifier));
 811         break;
 812       }
 813       case ChromeViewHostMsg_GetPluginInfo_Status::kClickToPlay: {
 814         placeholder = ChromePluginPlaceholder::CreateBlockedPlugin(
 815             render_frame,
 816             frame,
 817             params,
 818             plugin,
 819             identifier,
 820             group_name,
 821             IDR_CLICK_TO_PLAY_PLUGIN_HTML,
 822             l10n_util::GetStringFUTF16(IDS_PLUGIN_LOAD, group_name));
 823         placeholder->set_allow_loading(true);
 824         RenderThread::Get()->RecordAction(
 825             UserMetricsAction("Plugin_ClickToPlay"));
 826         observer->DidBlockContentType(content_type);
 827         break;
 828       }
 829       case ChromeViewHostMsg_GetPluginInfo_Status::kBlocked: {
 830         placeholder = ChromePluginPlaceholder::CreateBlockedPlugin(
 831             render_frame,
 832             frame,
 833             params,
 834             plugin,
 835             identifier,
 836             group_name,
 837             IDR_BLOCKED_PLUGIN_HTML,
 838             l10n_util::GetStringFUTF16(IDS_PLUGIN_BLOCKED, group_name));
 839         placeholder->set_allow_loading(true);
 840         RenderThread::Get()->RecordAction(UserMetricsAction("Plugin_Blocked"));
 841         observer->DidBlockContentType(content_type);
 842         break;
 843       }
 844       case ChromeViewHostMsg_GetPluginInfo_Status::kBlockedByPolicy: {
 845         placeholder = ChromePluginPlaceholder::CreateBlockedPlugin(
 846             render_frame,
 847             frame,
 848             params,
 849             plugin,
 850             identifier,
 851             group_name,
 852             IDR_BLOCKED_PLUGIN_HTML,
 853             l10n_util::GetStringFUTF16(IDS_PLUGIN_BLOCKED, group_name));
 854         placeholder->set_allow_loading(false);
 855         RenderThread::Get()->RecordAction(
 856             UserMetricsAction("Plugin_BlockedByPolicy"));
 857         observer->DidBlockContentType(content_type);
 858         break;
 859       }
 860     }
 861   }
 862   placeholder->SetStatus(status);
 863   return placeholder->plugin();
 864 }
 865
 866 // For NaCl content handling plugins, the NaCl manifest is stored in an
 867 // additonal 'nacl' param associated with the MIME type.
 868 //  static
 869 GURL ChromeContentRendererClient::GetNaClContentHandlerURL(
 870     const std::string& actual_mime_type,
 871     const content::WebPluginInfo& plugin) {
 872   // Look for the manifest URL among the MIME type's additonal parameters.
 873   const char* kNaClPluginManifestAttribute = "nacl";
 874   base::string16 nacl_attr = ASCIIToUTF16(kNaClPluginManifestAttribute);
 875   for (size_t i = 0; i < plugin.mime_types.size(); ++i) {
 876     if (plugin.mime_types[i].mime_type == actual_mime_type) {
 877       const content::WebPluginMimeType& content_type = plugin.mime_types[i];
 878       for (size_t i = 0; i < content_type.additional_param_names.size(); ++i) {
 879         if (content_type.additional_param_names[i] == nacl_attr)
 880           return GURL(content_type.additional_param_values[i]);
 881       }
 882       break;
 883     }
 884   }
 885   return GURL();
 886 }
 887
 888 //  static
 889 bool ChromeContentRendererClient::IsNaClAllowed(
 890     const GURL& manifest_url,
 891     const GURL& app_url,
 892     bool is_nacl_unrestricted,
 893     const Extension* extension,
 894     WebPluginParams* params) {
 895   // Temporarily allow these whitelisted apps and WebUIs to use NaCl.
 896   std::string app_url_host = app_url.host();
 897   std::string manifest_url_path = manifest_url.path();
 898
 899   bool is_whitelisted_web_ui =
 900       app_url.spec() == chrome::kChromeUIAppListStartPageURL;
 901
 902   bool is_photo_app =
 903       // Whitelisted apps must be served over https.
 904       app_url.SchemeIs("https") &&
 905       manifest_url.SchemeIs("https") &&
 906       (EndsWith(app_url_host, "plus.google.com", false) ||
 907        EndsWith(app_url_host, "plus.sandbox.google.com", false)) &&
 908       manifest_url.DomainIs("ssl.gstatic.com") &&
 909       (manifest_url_path.find("s2/oz/nacl/") == 1 ||
 910        manifest_url_path.find("photos/nacl/") == 1);
 911
 912   std::string manifest_fs_host;
 913   if (manifest_url.SchemeIsFileSystem() && manifest_url.inner_url()) {
 914     manifest_fs_host = manifest_url.inner_url()->host();
 915   }
 916   bool is_hangouts_app =
 917       // Whitelisted apps must be served over secure scheme.
 918       app_url.SchemeIs("https") &&
 919       manifest_url.SchemeIsSecure() &&
 920       manifest_url.SchemeIsFileSystem() &&
 921       (EndsWith(app_url_host, "talkgadget.google.com", false) ||
 922        EndsWith(app_url_host, "plus.google.com", false) ||
 923        EndsWith(app_url_host, "plus.sandbox.google.com", false)) &&
 924       // The manifest must be loaded from the host's FileSystem.
 925       (manifest_fs_host == app_url_host);
 926
 927   bool is_whitelisted_app = is_photo_app || is_hangouts_app;
 928
 929   bool is_extension_from_webstore = extension &&
 930       extension->from_webstore();
 931
 932   bool is_invoked_by_hosted_app = extension &&
 933       extension->is_hosted_app() &&
 934       extension->web_extent().MatchesURL(app_url);
 935
 936   // Allow built-in extensions and extensions under development.
 937   bool is_extension_unrestricted = extension &&
 938       (extension->location() == extensions::Manifest::COMPONENT ||
 939        extensions::Manifest::IsUnpackedLocation(extension->location()));
 940
 941   bool is_invoked_by_extension = app_url.SchemeIs("chrome-extension");
 942
 943   // The NaCl PDF viewer is always allowed and can use 'Dev' interfaces.
 944   bool is_nacl_pdf_viewer =
 945       (is_extension_from_webstore &&
 946        manifest_url.SchemeIs("chrome-extension") &&
 947        manifest_url.host() == "acadkphlmlegjaadjagenfimbpphcgnh");
 948
 949   // Allow Chrome Web Store extensions, built-in extensions and extensions
 950   // under development if the invocation comes from a URL with an extension
 951   // scheme. Also allow invocations if they are from whitelisted URLs or
 952   // if --enable-nacl is set.
 953   bool is_nacl_allowed = is_nacl_unrestricted ||
 954                          is_whitelisted_web_ui ||
 955                          is_whitelisted_app ||
 956                          is_nacl_pdf_viewer ||
 957                          is_invoked_by_hosted_app ||
 958                          (is_invoked_by_extension &&
 959                              (is_extension_from_webstore ||
 960                                  is_extension_unrestricted));
 961   if (is_nacl_allowed) {
 962     bool app_can_use_dev_interfaces = is_nacl_pdf_viewer;
 963     // Make sure that PPAPI 'dev' interfaces aren't available for production
 964     // apps unless they're whitelisted.
 965     WebString dev_attribute = WebString::fromUTF8("@dev");
 966     if ((!is_whitelisted_app && !is_extension_from_webstore) ||
 967         app_can_use_dev_interfaces) {
 968       // Add the special '@dev' attribute.
 969       std::vector<base::string16> param_names;
 970       std::vector<base::string16> param_values;
 971       param_names.push_back(dev_attribute);
 972       param_values.push_back(WebString());
 973       AppendParams(
 974           param_names,
 975           param_values,
 976           &params->attributeNames,
 977           &params->attributeValues);
 978     } else {
 979       // If the params somehow contain '@dev', remove it.
 980       size_t attribute_count = params->attributeNames.size();
 981       for (size_t i = 0; i < attribute_count; ++i) {
 982         if (params->attributeNames[i].equals(dev_attribute))
 983           params->attributeNames[i] = WebString();
 984       }
 985     }
 986   }
 987   return is_nacl_allowed;
 988 }
 989
 990 bool ChromeContentRendererClient::HasErrorPage(int http_status_code,
 991                                                std::string* error_domain) {
 992   // Use an internal error page, if we have one for the status code.
 993   if (!LocalizedError::HasStrings(LocalizedError::kHttpErrorDomain,
 994                                   http_status_code)) {
 995     return false;
 996   }
 997
 998   *error_domain = LocalizedError::kHttpErrorDomain;
 999   return true;
1000 }
1001
1002 bool ChromeContentRendererClient::ShouldSuppressErrorPage(
1003     content::RenderFrame* render_frame,
1004     const GURL& url) {
1005   // Unit tests for ChromeContentRendererClient pass a NULL RenderFrame here.
1006   // Unfortunately it's very difficult to construct a mock RenderView, so skip
1007   // this functionality in this case.
1008   if (render_frame) {
1009     content::RenderView* render_view = render_frame->GetRenderView();
1010     content::RenderFrame* main_render_frame = render_view->GetMainRenderFrame();
1011     blink::WebFrame* web_frame = render_frame->GetWebFrame();
1012     NetErrorHelper* net_error_helper = NetErrorHelper::Get(main_render_frame);
1013     if (net_error_helper->ShouldSuppressErrorPage(web_frame, url))
1014       return true;
1015   }
1016   // Do not flash an error page if the Instant new tab page fails to load.
1017   return search_bouncer_.get() && search_bouncer_->IsNewTabPage(url);
1018 }
1019
1020 void ChromeContentRendererClient::GetNavigationErrorStrings(
1021     content::RenderView* render_view,
1022     blink::WebFrame* frame,
1023     const blink::WebURLRequest& failed_request,
1024     const blink::WebURLError& error,
1025     std::string* error_html,
1026     base::string16* error_description) {
1027   const GURL failed_url = error.unreachableURL;
1028   const Extension* extension = NULL;
1029
1030   if (failed_url.is_valid() &&
1031       !failed_url.SchemeIs(extensions::kExtensionScheme)) {
1032     extension = extension_dispatcher_->extensions()->GetExtensionOrAppByURL(
1033         failed_url);
1034   }
1035
1036   bool is_post = EqualsASCII(failed_request.httpMethod(), "POST");
1037
1038   if (error_html) {
1039     // Use a local error page.
1040     if (extension && !extension->from_bookmark()) {
1041       // TODO(erikkay): Should we use a different template for different
1042       // error messages?
1043       int resource_id = IDR_ERROR_APP_HTML;
1044       const base::StringPiece template_html(
1045           ResourceBundle::GetSharedInstance().GetRawDataResource(
1046               resource_id));
1047       if (template_html.empty()) {
1048         NOTREACHED() << "unable to load template. ID: " << resource_id;
1049       } else {
1050         base::DictionaryValue error_strings;
1051         LocalizedError::GetAppErrorStrings(failed_url, extension,
1052                                            &error_strings);
1053         // "t" is the id of the template's root node.
1054         *error_html = webui::GetTemplatesHtml(template_html, &error_strings,
1055                                               "t");
1056       }
1057     } else {
1058       // TODO(ellyjones): change GetNavigationErrorStrings to take a RenderFrame
1059       // instead of a RenderView, then pass that in.
1060       // This is safe for now because we only install the NetErrorHelper on the
1061       // main render frame anyway; see the TODO(ellyjones) in
1062       // RenderFrameCreated.
1063       content::RenderFrame* main_render_frame =
1064           render_view->GetMainRenderFrame();
1065       NetErrorHelper* helper = NetErrorHelper::Get(main_render_frame);
1066       helper->GetErrorHTML(frame, error, is_post, error_html);
1067     }
1068   }
1069
1070   if (error_description) {
1071     if (!extension)
1072       *error_description = LocalizedError::GetErrorDetails(error, is_post);
1073   }
1074 }
1075
1076 bool ChromeContentRendererClient::RunIdleHandlerWhenWidgetsHidden() {
1077   return !extension_dispatcher_->is_extension_process();
1078 }
1079
1080 bool ChromeContentRendererClient::AllowPopup() {
1081   extensions::ScriptContext* current_context =
1082       extension_dispatcher_->script_context_set().GetCurrent();
1083   if (!current_context || !current_context->extension())
1084     return false;
1085   // See http://crbug.com/117446 for the subtlety of this check.
1086   switch (current_context->context_type()) {
1087     case extensions::Feature::UNSPECIFIED_CONTEXT:
1088     case extensions::Feature::WEB_PAGE_CONTEXT:
1089     case extensions::Feature::UNBLESSED_EXTENSION_CONTEXT:
1090       return false;
1091     case extensions::Feature::BLESSED_EXTENSION_CONTEXT:
1092     case extensions::Feature::CONTENT_SCRIPT_CONTEXT:
1093       return true;
1094     case extensions::Feature::BLESSED_WEB_PAGE_CONTEXT:
1095       return !current_context->web_frame()->parent();
1096   }
1097   NOTREACHED();
1098   return false;
1099 }
1100
1101 bool ChromeContentRendererClient::ShouldFork(WebFrame* frame,
1102                                              const GURL& url,
1103                                              const std::string& http_method,
1104                                              bool is_initial_navigation,
1105                                              bool is_server_redirect,
1106                                              bool* send_referrer) {
1107   DCHECK(!frame->parent());
1108
1109   // If this is the Instant process, fork all navigations originating from the
1110   // renderer.  The destination page will then be bucketed back to this Instant
1111   // process if it is an Instant url, or to another process if not.  Conversely,
1112   // fork if this is a non-Instant process navigating to an Instant url, so that
1113   // such navigations can also be bucketed into an Instant renderer.
1114   if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kInstantProcess) ||
1115       (search_bouncer_.get() && search_bouncer_->ShouldFork(url))) {
1116     *send_referrer = true;
1117     return true;
1118   }
1119
1120   // For now, we skip the rest for POST submissions.  This is because
1121   // http://crbug.com/101395 is more likely to cause compatibility issues
1122   // with hosted apps and extensions than WebUI pages.  We will remove this
1123   // check when cross-process POST submissions are supported.
1124   if (http_method != "GET")
1125     return false;
1126
1127   // If this is the Signin process, fork all navigations originating from the
1128   // renderer.  The destination page will then be bucketed back to this Signin
1129   // process if it is a Signin url, or to another process if not.
1130   if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kSigninProcess)) {
1131     // We never want to allow non-signin pages to fork-on-POST to a
1132     // signin-related action URL. We'll need to handle this carefully once
1133     // http://crbug.com/101395 is fixed. The CHECK ensures we don't forget.
1134     CHECK_NE(http_method, "POST");
1135     return true;
1136   }
1137
1138   // If |url| matches one of the prerendered URLs, stop this navigation and try
1139   // to swap in the prerendered page on the browser process. If the prerendered
1140   // page no longer exists by the time the OpenURL IPC is handled, a normal
1141   // navigation is attempted.
1142   if (prerender_dispatcher_.get() &&
1143       prerender_dispatcher_->IsPrerenderURL(url)) {
1144     *send_referrer = true;
1145     return true;
1146   }
1147
1148   const extensions::ExtensionSet* extensions =
1149       extension_dispatcher_->extensions();
1150
1151   // Determine if the new URL is an extension (excluding bookmark apps).
1152   const Extension* new_url_extension = extensions::GetNonBookmarkAppExtension(
1153       *extensions, url);
1154   bool is_extension_url = !!new_url_extension;
1155
1156   // If the navigation would cross an app extent boundary, we also need
1157   // to defer to the browser to ensure process isolation.  This is not necessary
1158   // for server redirects, which will be transferred to a new process by the
1159   // browser process when they are ready to commit.  It is necessary for client
1160   // redirects, which won't be transferred in the same way.
1161   if (!is_server_redirect &&
1162       CrossesExtensionExtents(frame, url, *extensions, is_extension_url,
1163           is_initial_navigation)) {
1164     // Include the referrer in this case since we're going from a hosted web
1165     // page. (the packaged case is handled previously by the extension
1166     // navigation test)
1167     *send_referrer = true;
1168
1169     const Extension* extension =
1170         extension_dispatcher_->extensions()->GetExtensionOrAppByURL(url);
1171     if (extension && extension->is_app()) {
1172       UMA_HISTOGRAM_ENUMERATION(
1173           extension->is_platform_app() ?
1174           extension_misc::kPlatformAppLaunchHistogram :
1175           extension_misc::kAppLaunchHistogram,
1176           extension_misc::APP_LAUNCH_CONTENT_NAVIGATION,
1177           extension_misc::APP_LAUNCH_BUCKET_BOUNDARY);
1178     }
1179     return true;
1180   }
1181
1182   // If this is a reload, check whether it has the wrong process type.  We
1183   // should send it to the browser if it's an extension URL (e.g., hosted app)
1184   // in a normal process, or if it's a process for an extension that has been
1185   // uninstalled.
1186   if (frame->top()->document().url() == url) {
1187     if (is_extension_url != extension_dispatcher_->is_extension_process())
1188       return true;
1189   }
1190
1191   return false;
1192 }
1193
1194 bool ChromeContentRendererClient::WillSendRequest(
1195     blink::WebFrame* frame,
1196     content::PageTransition transition_type,
1197     const GURL& url,
1198     const GURL& first_party_for_cookies,
1199     GURL* new_url) {
1200   // Check whether the request should be allowed. If not allowed, we reset the
1201   // URL to something invalid to prevent the request and cause an error.
1202   if (url.SchemeIs(extensions::kExtensionScheme) &&
1203       !extensions::ResourceRequestPolicy::CanRequestResource(
1204           url,
1205           frame,
1206           transition_type,
1207           extension_dispatcher_->extensions())) {
1208     *new_url = GURL(chrome::kExtensionInvalidRequestURL);
1209     return true;
1210   }
1211
1212   if (url.SchemeIs(extensions::kExtensionResourceScheme) &&
1213       !extensions::ResourceRequestPolicy::CanRequestExtensionResourceScheme(
1214           url,
1215           frame)) {
1216     *new_url = GURL(chrome::kExtensionResourceInvalidRequestURL);
1217     return true;
1218   }
1219
1220   const content::RenderView* render_view =
1221       content::RenderView::FromWebView(frame->view());
1222   SearchBox* search_box = SearchBox::Get(render_view);
1223   if (search_box && url.SchemeIs(chrome::kChromeSearchScheme)) {
1224     if (url.host() == chrome::kChromeUIThumbnailHost)
1225       return search_box->GenerateThumbnailURLFromTransientURL(url, new_url);
1226     else if (url.host() == chrome::kChromeUIFaviconHost)
1227       return search_box->GenerateFaviconURLFromTransientURL(url, new_url);
1228   }
1229
1230   return false;
1231 }
1232
1233 void ChromeContentRendererClient::DidCreateScriptContext(
1234     WebFrame* frame, v8::Handle<v8::Context> context, int extension_group,
1235     int world_id) {
1236   extension_dispatcher_->DidCreateScriptContext(
1237       frame, context, extension_group, world_id);
1238 }
1239
1240 unsigned long long ChromeContentRendererClient::VisitedLinkHash(
1241     const char* canonical_url, size_t length) {
1242   return visited_link_slave_->ComputeURLFingerprint(canonical_url, length);
1243 }
1244
1245 bool ChromeContentRendererClient::IsLinkVisited(unsigned long long link_hash) {
1246   return visited_link_slave_->IsVisited(link_hash);
1247 }
1248
1249 blink::WebPrescientNetworking*
1250 ChromeContentRendererClient::GetPrescientNetworking() {
1251   return prescient_networking_dispatcher_.get();
1252 }
1253
1254 bool ChromeContentRendererClient::ShouldOverridePageVisibilityState(
1255     const content::RenderFrame* render_frame,
1256     blink::WebPageVisibilityState* override_state) {
1257   if (!prerender::PrerenderHelper::IsPrerendering(render_frame))
1258     return false;
1259
1260   *override_state = blink::WebPageVisibilityStatePrerender;
1261   return true;
1262 }
1263
1264 void ChromeContentRendererClient::SetExtensionDispatcherForTest(
1265     extensions::Dispatcher* extension_dispatcher) {
1266   extension_dispatcher_.reset(extension_dispatcher);
1267   permissions_policy_delegate_.reset(
1268       new extensions::RendererPermissionsPolicyDelegate(
1269           extension_dispatcher_.get()));
1270 }
1271
1272 extensions::Dispatcher*
1273 ChromeContentRendererClient::GetExtensionDispatcherForTest() {
1274   return extension_dispatcher_.get();
1275 }
1276
1277 bool ChromeContentRendererClient::CrossesExtensionExtents(
1278     WebFrame* frame,
1279     const GURL& new_url,
1280     const extensions::ExtensionSet& extensions,
1281     bool is_extension_url,
1282     bool is_initial_navigation) {
1283   GURL old_url(frame->top()->document().url());
1284
1285   // If old_url is still empty and this is an initial navigation, then this is
1286   // a window.open operation.  We should look at the opener URL.
1287   if (is_initial_navigation && old_url.is_empty() && frame->opener()) {
1288     // If we're about to open a normal web page from a same-origin opener stuck
1289     // in an extension process, we want to keep it in process to allow the
1290     // opener to script it.
1291     WebDocument opener_document = frame->opener()->document();
1292     WebSecurityOrigin opener = frame->opener()->document().securityOrigin();
1293     bool opener_is_extension_url =
1294         !opener.isUnique() && extensions.GetExtensionOrAppByURL(
1295             opener_document.url()) != NULL;
1296     if (!is_extension_url &&
1297         !opener_is_extension_url &&
1298         extension_dispatcher_->is_extension_process() &&
1299         opener.canRequest(WebURL(new_url)))
1300       return false;
1301
1302     // In all other cases, we want to compare against the top frame's URL (as
1303     // opposed to the opener frame's), since that's what determines the type of
1304     // process.  This allows iframes outside an app to open a popup in the app.
1305     old_url = frame->top()->opener()->top()->document().url();
1306   }
1307
1308   // Only consider keeping non-app URLs in an app process if this window
1309   // has an opener (in which case it might be an OAuth popup that tries to
1310   // script an iframe within the app).
1311   bool should_consider_workaround = !!frame->opener();
1312
1313   return extensions::CrossesExtensionProcessBoundary(
1314       extensions, old_url, new_url, should_consider_workaround);
1315 }
1316
1317 #if defined(ENABLE_SPELLCHECK)
1318 void ChromeContentRendererClient::SetSpellcheck(SpellCheck* spellcheck) {
1319   RenderThread* thread = RenderThread::Get();
1320   if (spellcheck_.get() && thread)
1321     thread->RemoveObserver(spellcheck_.get());
1322   spellcheck_.reset(spellcheck);
1323   SpellCheckReplacer replacer(spellcheck_.get());
1324   content::RenderView::ForEach(&replacer);
1325   if (thread)
1326     thread->AddObserver(spellcheck_.get());
1327 }
1328 #endif
1329
1330 bool ChromeContentRendererClient::IsAdblockInstalled() {
1331   return g_current_client->extension_dispatcher_->extensions()->Contains(
1332       "gighmmpiobklfepjocnamgkkbiglidom");
1333 }
1334
1335 bool ChromeContentRendererClient::IsAdblockPlusInstalled() {
1336   return g_current_client->extension_dispatcher_->extensions()->Contains(
1337       "cfhdojbkjhnklbpkdaibdccddilifddb");
1338 }
1339
1340 bool ChromeContentRendererClient::IsAdblockWithWebRequestInstalled() {
1341   return g_current_client->extension_dispatcher_delegate_
1342       ->IsAdblockWithWebRequestInstalled();
1343 }
1344
1345 bool ChromeContentRendererClient::IsAdblockPlusWithWebRequestInstalled() {
1346   return g_current_client->extension_dispatcher_delegate_
1347       ->IsAdblockPlusWithWebRequestInstalled();
1348 }
1349
1350 bool ChromeContentRendererClient::IsOtherExtensionWithWebRequestInstalled() {
1351   return g_current_client->extension_dispatcher_delegate_
1352       ->IsOtherExtensionWithWebRequestInstalled();
1353 }
1354
1355 const void* ChromeContentRendererClient::CreatePPAPIInterface(
1356     const std::string& interface_name) {
1357 #if defined(ENABLE_PLUGINS)
1358 #if !defined(DISABLE_NACL)
1359   if (interface_name == PPB_NACL_PRIVATE_INTERFACE)
1360     return nacl::GetNaClPrivateInterface();
1361 #endif  // DISABLE_NACL
1362   if (interface_name == PPB_PDF_INTERFACE)
1363     return PPB_PDF_Impl::GetInterface();
1364 #endif
1365   return NULL;
1366 }
1367
1368 bool ChromeContentRendererClient::IsExternalPepperPlugin(
1369     const std::string& module_name) {
1370   // TODO(bbudge) remove this when the trusted NaCl plugin has been removed.
1371   // We must defer certain plugin events for NaCl instances since we switch
1372   // from the in-process to the out-of-process proxy after instantiating them.
1373   return module_name == "Native Client";
1374 }
1375
1376 bool ChromeContentRendererClient::IsExtensionOrSharedModuleWhitelisted(
1377     const GURL& url, const std::set<std::string>& whitelist) {
1378   const extensions::ExtensionSet* extension_set =
1379       g_current_client->extension_dispatcher_->extensions();
1380   return chrome::IsExtensionOrSharedModuleWhitelisted(url, extension_set,
1381       whitelist);
1382 }
1383
1384 blink::WebSpeechSynthesizer*
1385 ChromeContentRendererClient::OverrideSpeechSynthesizer(
1386     blink::WebSpeechSynthesizerClient* client) {
1387   return new TtsDispatcher(client);
1388 }
1389
1390 bool ChromeContentRendererClient::AllowBrowserPlugin(
1391     blink::WebPluginContainer* container) {
1392   // If this |BrowserPlugin| <object> in the |container| is not inside a
1393   // <webview>/<adview> shadowHost, we disable instantiating this plugin. This
1394   // is to discourage and prevent developers from accidentally attaching
1395   // <object> directly in apps.
1396   //
1397   // Note that this check below does *not* ensure any security, it is still
1398   // possible to bypass this check.
1399   // TODO(lazyboy): http://crbug.com/178663, Ensure we properly disallow
1400   // instantiating BrowserPlugin outside of the <webview>/<adview> shim.
1401   if (container->element().isNull())
1402     return false;
1403
1404   if (container->element().shadowHost().isNull())
1405     return false;
1406
1407   WebString tag_name = container->element().shadowHost().tagName();
1408   return tag_name.equals(WebString::fromUTF8(kWebViewTagName)) ||
1409     tag_name.equals(WebString::fromUTF8(kAdViewTagName));
1410 }
1411
1412 bool ChromeContentRendererClient::AllowPepperMediaStreamAPI(
1413     const GURL& url) {
1414 #if !defined(OS_ANDROID)
1415   // Allow only the Hangouts app to use the MediaStream APIs. It's OK to check
1416   // the whitelist in the renderer, since we're only preventing access until
1417   // these APIs are public and stable.
1418   std::string url_host = url.host();
1419   if (url.SchemeIs("https") &&
1420       (EndsWith(url_host, "talkgadget.google.com", false) ||
1421        EndsWith(url_host, "plus.google.com", false) ||
1422        EndsWith(url_host, "plus.sandbox.google.com", false)) &&
1423       StartsWithASCII(url.path(), "/hangouts/", false)) {
1424     return true;
1425   }
1426   // Allow access for tests.
1427   if (CommandLine::ForCurrentProcess()->HasSwitch(
1428           switches::kEnablePepperTesting)) {
1429     return true;
1430   }
1431 #endif  // !defined(OS_ANDROID)
1432   return false;
1433 }
1434
1435 void ChromeContentRendererClient::AddKeySystems(
1436     std::vector<content::KeySystemInfo>* key_systems) {
1437   AddChromeKeySystems(key_systems);
1438 }
1439
1440 bool ChromeContentRendererClient::ShouldReportDetailedMessageForSource(
1441     const base::string16& source) const {
1442   return extensions::IsSourceFromAnExtension(source);
1443 }
1444
1445 bool ChromeContentRendererClient::ShouldEnableSiteIsolationPolicy() const {
1446   // SiteIsolationPolicy is off by default. We would like to activate cross-site
1447   // document blocking (for UMA data collection) for normal renderer processes
1448   // running a normal web page from the Internet. We only turn on
1449   // SiteIsolationPolicy for a renderer process that does not have the extension
1450   // flag on.
1451   CommandLine* command_line = CommandLine::ForCurrentProcess();
1452   return !command_line->HasSwitch(extensions::switches::kExtensionProcess);
1453 }
1454
1455 blink::WebWorkerPermissionClientProxy*
1456 ChromeContentRendererClient::CreateWorkerPermissionClientProxy(
1457     content::RenderFrame* render_frame,
1458     blink::WebFrame* frame) {
1459   return new WorkerPermissionClientProxy(render_frame, frame);
1460 }