Make EnableViewSourceMode a FrameMsg

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 <stddef.h>
 #include <stdint.h>
 
@@ skipping 775 matching lines @@
                           int error_code);
   void OnGetSavableResourceLinks();
   void OnGetSerializedHtmlWithLocalLinks(
       const std::map<GURL, base::FilePath>& url_to_local_path,
       const std::map<int, base::FilePath>& frame_routing_id_to_local_path);
   void OnSerializeAsMHTML(const FrameMsg_SerializeAsMHTML_Params& params);
   void OnFind(int request_id,
               const base::string16& search_text,
               const blink::WebFindOptions& options);
   void OnStopFinding(StopFindAction action);
+  void OnEnableViewSourceMode();
 #if defined(OS_ANDROID)
   void OnActivateNearestFindResult(int request_id, float x, float y);
   void OnFindMatchRects(int current_version);
   void OnSelectPopupMenuItems(bool canceled,
                               const std::vector<int>& selected_indices);
 #elif defined(OS_MACOSX)
   void OnSelectPopupMenuItem(int selected_index);
   void OnCopyToFindPboard();
 #endif
 
@@ skipping 398 matching lines @@
 #endif
 
   base::WeakPtrFactory<RenderFrameImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_FRAME_IMPL_H_