Hook up loading signal to ResourceScheduler.

content/browser/renderer_host/render_widget_host_impl.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 CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 
 #include <deque>
 #include <list>
 #include <map>
@@ skipping 209 matching lines @@
   // Called to notify the RenderWidget that it has lost the mouse lock.
   virtual void LostMouseLock();
 
   // Noifies the RenderWidget of the current mouse cursor visibility state.
   void SendCursorVisibilityState(bool is_visible);
 
   // Notifies the RenderWidgetHost that the View was destroyed.
   void ViewDestroyed();
 
   // Indicates if the page has finished loading.
-  void SetIsLoading(bool is_loading);
+  virtual void SetIsLoading(bool is_loading);
 
 #if defined(OS_MACOSX)
   // Pause for a moment to wait for pending repaint or resize messages sent to
   // the renderer to arrive. If pending resize messages are for an old window
   // size, then also pump through a new resize message if there is time.
   void PauseForPendingResizeOrRepaints();
 
   // Whether pausing may be useful.
   bool CanPauseForPendingResizeOrRepaints();
 
@@ skipping 602 matching lines @@
   typedef std::map<int,
       base::Callback<void(const unsigned char*, size_t)> > PendingSnapshotMap;
   PendingSnapshotMap pending_browser_snapshots_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_