Remove some dead favicon code in RenderViewImpl.

content/renderer/render_view_impl.h

 // Copyright (c) 2012 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_VIEW_IMPL_H_
 #define CONTENT_RENDERER_RENDER_VIEW_IMPL_H_
 
 #include <deque>
 #include <map>
 #include <set>
@@ skipping 107 matching lines @@
 
 namespace ui {
 struct SelectedFileInfo;
 }
 
 namespace content {
 
 class BrowserPluginManager;
 class DevToolsAgent;
 class DocumentState;
-class FaviconHelper;
 class HistoryController;
 class HistoryEntry;
 class ImageResourceFetcher;
 class MouseLockDispatcher;
 class NavigationState;
 class PepperPluginInstanceImpl;
 class RenderViewImplTest;
 class RenderViewObserver;
 class RenderViewTest;
 class RendererDateTimePicker;
@@ skipping 608 matching lines @@
                             const gfx::Rect& view_frame);
 #endif
 
   // Adding a new message handler? Please add it in alphabetical order above
   // and put it in the same position in the .cc file.
 
   // Misc private functions ----------------------------------------------------
   // Check whether the preferred size has changed.
   void CheckPreferredSize();
 
-  // This callback is triggered when DownloadFavicon completes, either
-  // succesfully or with a failure. See DownloadFavicon for more
-  // details.
-  void DidDownloadFavicon(ImageResourceFetcher* fetcher,
-                          const SkBitmap& image);
-
-  // Requests to download a favicon image. When done, the RenderView is notified
-  // by way of DidDownloadFavicon. Returns true if the request was successfully
-  // started, false otherwise. id is used to uniquely identify the request and
-  // passed back to the DidDownloadFavicon method. If the image has multiple
-  // frames, the frame whose size is image_size is returned. If the image
-  // doesn't have a frame at the specified size, the first is returned.
-  bool DownloadFavicon(int id, const GURL& image_url, int image_size);
-
   // Called to get the WebPlugin to handle find requests in the document.
   // Returns NULL if there is no such WebPlugin.
   blink::WebPlugin* GetWebPluginForFind();
 
   // Returns true if the |params| navigation is to an entry that has been
   // cropped due to a recent navigation the browser did not know about.
   bool IsBackForwardToStaleEntry(const FrameMsg_Navigate_Params& params,
                                  bool is_reload);
 
   // Make the given |frame| show an empty, unscriptable page.
@@ skipping 350 matching lines @@
   // use the Observer interface to filter IPC messages and receive frame change
   // notifications.
   // ---------------------------------------------------------------------------
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_VIEW_IMPL_H_