Cleanup: Remove more forward declarations in various chrome/browser directories.

chrome/browser/favicon/favicon_tab_helper.h

 // Copyright (c) 2011 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 CHROME_BROWSER_FAVICON_FAVICON_TAB_HELPER_H_
 #define CHROME_BROWSER_FAVICON_FAVICON_TAB_HELPER_H_
 #pragma once
 
+#include <vector>
+
 #include "base/basictypes.h"
 #include "base/callback_old.h"
 #include "chrome/browser/favicon/favicon_handler_delegate.h"
 #include "chrome/browser/favicon/favicon_service.h"
 #include "chrome/common/favicon_url.h"
 #include "content/browser/tab_contents/tab_contents_observer.h"
 #include "googleurl/src/gurl.h"
 
 class FaviconHandler;
 class NavigationEntry;
-class RefCountedMemory;
 class SkBitmap;
 class TabContents;
 
 // FaviconTabHelper works with FaviconHandlers to fetch the favicons.
 //
 // FetchFavicon fetches the given page's icons. It requests the icons from the
 // history backend. If the icon is not available or expired, the icon will be
 // downloaded and saved in the history backend.
 //
 // DownloadImage downloads the specified icon and returns it through the given
@@ skipping 67 matching lines @@
   scoped_ptr<FaviconHandler> favicon_handler_;
 
   // Handles downloading touchicons. It is NULL if
   // browser_defaults::kEnableTouchIcon is false.
   scoped_ptr<FaviconHandler> touch_icon_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(FaviconTabHelper);
 };
 
 #endif  // CHROME_BROWSER_FAVICON_FAVICON_TAB_HELPER_H_