Only commit cookie changes in prerenders after a prerender is shown

content/public/browser/content_browser_client.cc

 // 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.
 
 #include "content/public/browser/content_browser_client.h"
 
 #include "base/files/file_path.h"
 #include "ui/gfx/image/image_skia.h"
 #include "url/gurl.h"
 
@@ skipping 48 matching lines @@
 bool ContentBrowserClient::ShouldAllowOpenURL(SiteInstance* site_instance,
                                               const GURL& url) {
   return true;
 }
 
 bool ContentBrowserClient::IsSuitableHost(RenderProcessHost* process_host,
                                           const GURL& site_url) {
   return true;
 }
 
+bool ContentBrowserClient::MayReuseHost(RenderProcessHost* process_host) {
+  return true;
+}
+
 bool ContentBrowserClient::ShouldTryToUseExistingProcessHost(
       BrowserContext* browser_context, const GURL& url) {
   return false;
 }
 
 bool ContentBrowserClient::ShouldSwapBrowsingInstancesForNavigation(
     SiteInstance* site_instance,
     const GURL& current_url,
     const GURL& new_url) {
   return false;
@@ skipping 227 matching lines @@
 
 #if defined(VIDEO_HOLE)
 ExternalVideoSurfaceContainer*
 ContentBrowserClient::OverrideCreateExternalVideoSurfaceContainer(
     WebContents* web_contents) {
   return NULL;
 }
 #endif
 
 }  // namespace content