Implement WebPrescientNetworking to trigger preconnect from Blink

chrome/renderer/prerender/prerender_dispatcher.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_RENDERER_PRERENDER_PRERENDER_DISPATCHER_H_
 #define CHROME_RENDERER_PRERENDER_PRERENDER_DISPATCHER_H_
 
 #include <map>
 
 #include "base/compiler_specific.h"
@@ skipping 23 matching lines @@
 
   // Message handlers for messages from the browser process.
   void OnPrerenderStart(int prerender_id);
   void OnPrerenderStopLoading(int prerender_id);
   void OnPrerenderAddAlias(int prerender_id, const GURL& url);
   void OnPrerenderStop(int prerender_id);
 
   // From RenderProcessObserver:
   virtual bool OnControlMessageReceived(const IPC::Message& message) OVERRIDE;
 
   // From WebPrerenderingSupport:

[gavinp, 2013/05/08 11:16:56]

Can you add me to the review for the changes to WebPrerenderingSupport in blink?

[kouhei (in TOK), 2013/05/08 13:33:16]

Blink side is here: https://codereview.chromium.org/14746002/
cbentzel has already added you as reviewer.

+  virtual void preconnect(const WebKit::WebURL& url,
+                          WebKit::WebPreconnectMotivation motivation) OVERRIDE;
   virtual void add(const WebKit::WebPrerender& prerender) OVERRIDE;
   virtual void cancel(const WebKit::WebPrerender& prerender) OVERRIDE;
   virtual void abandon(const WebKit::WebPrerender& prerender) OVERRIDE;
 
   // From WebKit, prerender elements launched by renderers in our process.
   std::map<int, WebKit::WebPrerender> prerenders_;
 
   // From the browser process, which prerenders are running, indexed by URL.
   // Updated by the browser processes as aliases are discovered.
   std::multimap<GURL, int> running_prerender_urls_;
 };
 
 }  // namespace prerender
 
 #endif  // CHROME_RENDERER_PRERENDER_PRERENDER_DISPATCHER_H_