Move RefCountedMemory class to base namespace.

chrome/browser/ui/webui/history_ui.h

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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 CHROME_BROWSER_UI_WEBUI_HISTORY_UI_H_
 #define CHROME_BROWSER_UI_WEBUI_HISTORY_UI_H_
 #pragma once
 
 #include <string>
 
 #include "base/string16.h"
@@ skipping 67 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(BrowsingHistoryHandler);
 };
 
 class HistoryUI : public content::WebUIController {
  public:
   explicit HistoryUI(content::WebUI* web_ui);
 
   // Return the URL for a given search term.
   static const GURL GetHistoryURLWithSearchText(const string16& text);
 
-  static RefCountedMemory* GetFaviconResourceBytes();
+  static base::RefCountedMemory* GetFaviconResourceBytes();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(HistoryUI);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_HISTORY_UI_H_