Add PrerenderStatusEvent on Prerenders

chrome/browser/prerender/prerender_contents.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_PRERENDER_PRERENDER_CONTENTS_H_
 #define CHROME_BROWSER_PRERENDER_PRERENDER_CONTENTS_H_
 
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 99 matching lines @@
   // |is_control_group| is true, this will go through some of the mechanics of
   // starting a prerender, without actually creating the RenderView.
   // |creator_child_id| is the id of the child process that caused the prerender
   // to be created, and is needed so that the prerendered URLs can be sent to it
   // so render-initiated navigations will swap in the prerendered page. |size|
   // indicates the rectangular dimensions that the prerendered page should be.
   // |session_storage_namespace| indicates the namespace that the prerendered
   // page should be part of.
   virtual void StartPrerendering(
       int creator_child_id,
+      int prerender_id,
       const gfx::Size& size,
       content::SessionStorageNamespace* session_storage_namespace,
       bool is_control_group);
 
   // Verifies that the prerendering is not using too many resources, and kills
   // it if not.
   void DestroyWhenUsingTooManyResources();
 
   content::RenderViewHost* GetRenderViewHostMutable();
   const content::RenderViewHost* GetRenderViewHost() const;
@@ skipping 257 matching lines @@
 
   // Experiment during which this prerender is performed.
   uint8 experiment_id_;
 
   // List of all pages the prerendered page has tried to prerender.
   std::vector<PendingPrerenderInfo> pending_prerenders_;
 
   // The process that created the child id.
   int creator_child_id_;
 
+  // The prerender id from the launcher.
+  int prerender_id_;
+
   // The size of the WebView from the launching page.
   gfx::Size size_;
 
   typedef std::vector<history::HistoryAddPageArgs> AddPageVector;
 
   // Caches pages to be added to the history.
   AddPageVector add_page_vector_;
 
   DISALLOW_COPY_AND_ASSIGN(PrerenderContents);
 };
 
 }  // namespace prerender
 
 #endif  // CHROME_BROWSER_PRERENDER_PRERENDER_CONTENTS_H_