Fix pushState causing stop/reload button and favicon to flicker.

content/browser/frame_host/render_frame_host_impl.h

 // Copyright 2013 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_FRAME_HOST_RENDER_FRAME_HOST_IMPL_H_
 #define CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_IMPL_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 102 matching lines @@
   void set_swapped_out(bool is_swapped_out) {
     is_swapped_out_ = is_swapped_out;
   }
 
   // Sets the RVH for |this| as pending shutdown. |on_swap_out| will be called
   // when the SwapOutACK is received.
   void SetPendingShutdown(const base::Closure& on_swap_out);
 
   // TODO(nasko): This method is public so RenderViewHostImpl::Navigate can
   // call it directly. It should be made private once Navigate moves here.
-  void OnDidStartLoading();
+  // |to_different_document| will be true unless the load is a fragment
+  // navigation, or triggered by history.pushState/replaceState.
+  void OnDidStartLoading(bool to_different_document);
 
   // Sends the given navigation message. Use this rather than sending it
   // yourself since this does the internal bookkeeping described below. This
   // function takes ownership of the provided message pointer.
   //
   // If a cross-site request is in progress, we may be suspended while waiting
   // for the onbeforeunload handler, so this function might buffer the message
   // rather than sending it.
   void Navigate(const FrameMsg_Navigate_Params& params);
 
@@ skipping 76 matching lines @@
 
   int routing_id_;
   bool is_swapped_out_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_IMPL_H_