Adds DNS prefetch support to Chromecast.

chromecast/browser/cast_content_browser_client.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chromecast/browser/cast_content_browser_client.h"
 
 #include "base/command_line.h"
 #include "base/files/scoped_file.h"
 #include "base/i18n/rtl.h"
 #include "base/path_service.h"
 #include "chromecast/browser/cast_browser_context.h"
 #include "chromecast/browser/cast_browser_main_parts.h"
 #include "chromecast/browser/cast_browser_process.h"
 #include "chromecast/browser/cast_network_delegate.h"
 #include "chromecast/browser/devtools/cast_dev_tools_delegate.h"
 #include "chromecast/browser/geolocation/cast_access_token_store.h"
 #include "chromecast/browser/url_request_context_factory.h"
 #include "chromecast/common/cast_paths.h"
 #include "chromecast/common/global_descriptors.h"
 #include "components/crash/app/breakpad_linux.h"
+#include "components/dns_prefetch/browser/net_message_filter.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/certificate_request_result_type.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/common/content_descriptors.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/url_constants.h"
 #include "content/public/common/web_preferences.h"
 #include "net/ssl/ssl_cert_request_info.h"
 
 #if defined(OS_ANDROID)
@@ skipping 19 matching lines @@
 }
 
 content::BrowserMainParts* CastContentBrowserClient::CreateBrowserMainParts(
     const content::MainFunctionParams& parameters) {
   return new CastBrowserMainParts(parameters,
                                   url_request_context_factory_.get());
 }
 
 void CastContentBrowserClient::RenderProcessWillLaunch(
     content::RenderProcessHost* host) {
+  scoped_refptr<content::BrowserMessageFilter> net_message_filter(
+      new dns_prefetch::NetMessageFilter(
+          url_request_context_factory_->host_resolver()));
+  host->AddFilter(net_message_filter.get());
 }
 
 net::URLRequestContextGetter* CastContentBrowserClient::CreateRequestContext(
     content::BrowserContext* browser_context,
     content::ProtocolHandlerMap* protocol_handlers,
     content::URLRequestInterceptorScopedVector request_interceptors) {
   return url_request_context_factory_->CreateMainGetter(
       browser_context,
       protocol_handlers,
       request_interceptors.Pass());
@@ skipping 192 matching lines @@
 content::ExternalVideoSurfaceContainer*
 CastContentBrowserClient::OverrideCreateExternalVideoSurfaceContainer(
     content::WebContents* web_contents) {
   return new ExternalVideoSurfaceContainerImpl(web_contents);
 }
 #endif  // defined(OS_ANDROID) && defined(VIDEO_HOLE)
 
 
 }  // namespace shell
 }  // namespace chromecast