Remove the extra copy of page id.

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 <map>
 #include <vector>
 
@@ skipping 494 matching lines @@
   void OnRunBeforeUnloadConfirm(const GURL& frame_url,
                                 const base::string16& message,
                                 bool is_reload,
                                 IPC::Message* reply_msg);
   void OnTextSurroundingSelectionResponse(const base::string16& content,
                                           size_t start_offset,
                                           size_t end_offset);
   void OnDidAccessInitialDocument();
   void OnDidDisownOpener();
   void OnDidChangeName(const std::string& name);
-  void OnDidAssignPageId(int32 page_id);
   void OnDidChangeSandboxFlags(int32 frame_routing_id, SandboxFlags flags);
   void OnUpdateTitle(const base::string16& title,
                      blink::WebTextDirection title_direction);
   void OnUpdateEncoding(const std::string& encoding);
   void OnBeginNavigation(const CommonNavigationParams& common_params,
                          const BeginNavigationParams& begin_params,
                          scoped_refptr<ResourceRequestBody> body);
   void OnDispatchLoad();
   void OnAccessibilityEvents(
       const std::vector<AccessibilityHostMsg_EventParams>& params,
@@ skipping 207 matching lines @@
 
   // NOTE: This must be the last member.
   base::WeakPtrFactory<RenderFrameHostImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_IMPL_H_