Add pending preloads indexed by routing id. Start preloading once we navigate.

chrome/browser/prerender/prerender_contents.h

 // Copyright (c) 2011 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_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 66 matching lines @@
   void set_render_view_host(RenderViewHost* rvh) { render_view_host_ = rvh; }
   ViewHostMsg_FrameNavigate_Params* navigate_params() {
     return navigate_params_.get();
   }
   string16 title() const { return title_; }
   int32 page_id() const { return page_id_; }
   GURL icon_url() const { return icon_url_; }
   bool has_stopped_loading() const { return has_stopped_loading_; }
   bool prerendering_has_started() const { return prerendering_has_started_; }
 
+  // Sets the parameter to the value of the associated RenderViewHost's child id
+  // and returns a boolean indicating the validity of that id.
+  virtual bool GetChildId(int* child_id) const;
+
+  // Sets the parameter to the value of the associated RenderViewHost's route id
+  // and returns a boolean indicating the validity of that id.
+  virtual bool GetRouteId(int* route_id) const;
+
   // Set the final status for how the PrerenderContents was used. This
   // should only be called once, and should be called before the prerender
   // contents are destroyed.
   void set_final_status(FinalStatus final_status);
   FinalStatus final_status() const;
 
   base::TimeTicks load_start_time() const { return load_start_time_; }
 
   // Indicates whether this prerendered page can be used for the provided
   // URL, i.e. whether there is a match.
@@ skipping 171 matching lines @@
   // Maximum amount of private memory that may be used per PrerenderContents,
   // in MB.
   static const int kMaxPrerenderPrivateMB = 100;
 
   DISALLOW_COPY_AND_ASSIGN(PrerenderContents);
 };
 
 }  // prerender
 
 #endif  // CHROME_BROWSER_PRERENDER_PRERENDER_CONTENTS_H_