partial PageClickTracker migration to RenderFrameObserver

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 272 matching lines @@
   // IPC::Sender
   bool Send(IPC::Message* msg) override;
 
   // IPC::Listener
   bool OnMessageReceived(const IPC::Message& msg) override;
 
   // RenderFrame implementation:
   RenderView* GetRenderView() override;
   int GetRoutingID() override;
   blink::WebLocalFrame* GetWebFrame() override;
+  blink::WebElement GetFocusedElement() const override;
   WebPreferences& GetWebkitPreferences() override;
   int ShowContextMenu(ContextMenuClient* client,
                       const ContextMenuParams& params) override;
   void CancelContextMenu(int request_id) override;
   blink::WebNode GetContextMenuNode() const override;
   blink::WebPlugin* CreatePlugin(
       blink::WebFrame* frame,
       const WebPluginInfo& info,
       const blink::WebPluginParams& params,
       scoped_ptr<PluginInstanceThrottler> throttler) override;
@@ skipping 261 matching lines @@
 
   typedef std::map<GURL, double> HostZoomLevels;
 
   // Functions to add and remove observers for this object.
   void AddObserver(RenderFrameObserver* observer);
   void RemoveObserver(RenderFrameObserver* observer);
 
   // Builds and sends DidCommitProvisionalLoad to the host.
   void SendDidCommitProvisionalLoad(blink::WebFrame* frame);
 
-  // Gets the focused element. If no such element exists then the element will
-  // be NULL.
-  blink::WebElement GetFocusedElement();
-
   // IPC message handlers ------------------------------------------------------
   //
   // The documentation for these functions should be in
   // content/common/*_messages.h for the message that the function is handling.
   void OnBeforeUnload();
   void OnSwapOut(int proxy_routing_id,
                  bool is_loading,
                  const FrameReplicationState& replicated_frame_state);
   void OnStop();
   void OnShowContextMenu(const gfx::Point& location);
@@ skipping 280 matching lines @@
 #endif
 
   base::WeakPtrFactory<RenderFrameImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_FRAME_IMPL_H_