[Offline Pages] Make prerenderer notify us of network progress.

chrome/browser/prerender/prerender_link_manager.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_LINK_MANAGER_H_
 #define CHROME_BROWSER_PRERENDER_PRERENDER_LINK_MANAGER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 131 matching lines @@
   void CancelPendingPrerendersForLauncher(PrerenderContents* launcher);
 
   // From KeyedService:
   void Shutdown() override;
 
   // From PrerenderHandle::Observer:
   void OnPrerenderStart(PrerenderHandle* prerender_handle) override;
   void OnPrerenderStopLoading(PrerenderHandle* prerender_handle) override;
   void OnPrerenderDomContentLoaded(PrerenderHandle* prerender_handle) override;
   void OnPrerenderStop(PrerenderHandle* prerender_handle) override;
+  void OnPrerenderNetworkBytesChanged(
+      PrerenderHandle* prerender_handle) override;
 
   bool has_shutdown_;
 
   PrerenderManager* manager_;
 
   // All prerenders known to this PrerenderLinkManager. Insertions are always
   // made at the back, so the oldest prerender is at the front, and the youngest
   // at the back.
   std::list<LinkPrerender> prerenders_;
 
   // Helper object to manage prerenders which are launched by other prerenders
   // and must be deferred until the launcher is swapped in.
   std::unique_ptr<PendingPrerenderManager> pending_prerender_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(PrerenderLinkManager);
 };
 
 }  // namespace prerender
 
 #endif  // CHROME_BROWSER_PRERENDER_PRERENDER_LINK_MANAGER_H_