Only commit cookie changes in prerenders after a prerender is shown

chrome/browser/chrome_content_browser_client.h

 // Copyright (c) 2012 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.
 
 #ifndef CHROME_BROWSER_CHROME_CONTENT_BROWSER_CLIENT_H_
 #define CHROME_BROWSER_CHROME_CONTENT_BROWSER_CLIENT_H_
 
 #include <set>
 #include <string>
 #include <utility>
@@ skipping 13 matching lines @@
 }
 
 namespace content {
 class QuotaPermissionContext;
 }
 
 namespace extensions {
 class BrowserPermissionsPolicyDelegate;
 }
 
+namespace prerender {
+class PrerenderTracker;
+}
+
 namespace user_prefs {
 class PrefRegistrySyncable;
 }
 
 namespace chrome {
 
 class ChromeContentBrowserClient : public content::ContentBrowserClient {
  public:
   ChromeContentBrowserClient();
   virtual ~ChromeContentBrowserClient();
@@ skipping 51 matching lines @@
       bool in_memory,
       content::ProtocolHandlerMap* protocol_handlers,
       content::ProtocolHandlerScopedVector protocol_interceptors) OVERRIDE;
   virtual bool IsHandledURL(const GURL& url) OVERRIDE;
   virtual bool CanCommitURL(content::RenderProcessHost* process_host,
                             const GURL& url) OVERRIDE;
   virtual bool ShouldAllowOpenURL(content::SiteInstance* site_instance,
                                   const GURL& url) OVERRIDE;
   virtual bool IsSuitableHost(content::RenderProcessHost* process_host,
                               const GURL& site_url) OVERRIDE;
+  virtual bool MayReuseHost(content::RenderProcessHost* process_host) OVERRIDE;
   virtual bool ShouldTryToUseExistingProcessHost(
       content::BrowserContext* browser_context, const GURL& url) OVERRIDE;
   virtual void SiteInstanceGotProcess(
       content::SiteInstance* site_instance) OVERRIDE;
   virtual void SiteInstanceDeleting(content::SiteInstance* site_instance)
       OVERRIDE;
   virtual void WorkerProcessCreated(content::SiteInstance* site_instance,
                                     int worker_process_id) OVERRIDE;
   virtual void WorkerProcessTerminated(content::SiteInstance* site_instance,
                                        int worker_process_id) OVERRIDE;
@@ skipping 156 matching lines @@
   virtual void PreSpawnRenderer(sandbox::TargetPolicy* policy,
                                 bool* success) OVERRIDE;
 #endif
 
   virtual bool IsPluginAllowedToCallRequestOSFileHandle(
       content::BrowserContext* browser_context,
       const GURL& url) OVERRIDE;
 
   virtual bool IsPluginAllowedToUseDevChannelAPIs() OVERRIDE;
 
+  virtual net::CookieStore* OverrideCookieStoreForRenderProcess(
+      int render_process_id) OVERRIDE;
+
  private:
 #if defined(ENABLE_WEBRTC)
   // Copies disable WebRTC encryption switch depending on the channel.
   static void MaybeCopyDisableWebRtcEncryptionSwitch(
       base::CommandLine* to_command_line,
       const base::CommandLine& from_command_line,
       VersionInfo::Channel channel);
 #endif
 
 #if defined(ENABLE_PLUGINS)
   // Set of origins that can use TCP/UDP private APIs from NaCl.
   std::set<std::string> allowed_socket_origins_;
   // Set of origins that can get a handle for FileIO from NaCl.
   std::set<std::string> allowed_file_handle_origins_;
 #endif
   scoped_ptr<extensions::BrowserPermissionsPolicyDelegate>
       permissions_policy_delegate_;
 
+  // The prerender tracker used to determine whether a render process is used
+  // for prerendering and an override cookie store must be provided.
+  // This needs to be kept as a member rather than just looked up from
+  // the profile due to initialization ordering, as well as due to threading.
+  // It is initialized on the UI thread when the ResoureDispatcherHost is
+  // created. It is used only the IO thread.
+  prerender::PrerenderTracker* prerender_tracker_;
+
   friend class DisableWebRtcEncryptionFlagTest;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeContentBrowserClient);
 };
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_CHROME_CONTENT_BROWSER_CLIENT_H_