Prepare for per frame did{Start,Stop}Loading calls

content/renderer/render_frame_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_RENDERER_RENDER_FRAME_IMPL_H_
 #define CONTENT_RENDERER_RENDER_FRAME_IMPL_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 79 matching lines @@
   // This is called right after creation with the WebFrame for this RenderFrame.
   void SetWebFrame(blink::WebFrame* web_frame);
 
   // Notification from RenderView.
   virtual void OnStop();
 
   // Start/Stop loading notifications.
   // TODO(nasko): Those are page-level methods at this time and come from
   // WebViewClient. We should move them to be WebFrameClient calls and put
   // logic in the browser side to balance starts/stops.
-  void didStartLoading();
-  void didStopLoading();
+  virtual void didStartLoading(bool to_different_document);
+  virtual void didStopLoading();
+  virtual void didChangeLoadProgress(double load_progress);
 
 #if defined(ENABLE_PLUGINS)
   // Notification that a PPAPI plugin has been created.
   void PepperPluginCreated(RendererPpapiHost* host);
 
   // Notifies that |instance| has changed the cursor.
   // This will update the cursor appearance if it is currently over the plugin
   // instance.
   void PepperDidChangeCursor(PepperPluginInstanceImpl* instance,
                              const blink::WebCursorInfo& cursor);
@@ skipping 252 matching lines @@
       const base::string16& selection_text,
       size_t selection_text_offset,
       const gfx::Range& selection_range,
       const ContextMenuParams& params);
 
   // Stores the WebFrame we are associated with.
   blink::WebFrame* frame_;
 
   base::WeakPtr<RenderViewImpl> render_view_;
   int routing_id_;
+  bool is_loading_;
   bool is_swapped_out_;
   bool is_detaching_;
 
 #if defined(ENABLE_PLUGINS)
   // Current text input composition text. Empty if no composition is in
   // progress.
   base::string16 pepper_composition_text_;
 #endif
 
   RendererWebCookieJarImpl cookie_jar_;
@@ skipping 15 matching lines @@
   // always respond properly to the request, so we don't have to worry so
   // much about leaks.
   IDMap<ContextMenuClient, IDMapExternalPointer> pending_context_menus_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_FRAME_IMPL_H_