Move RefCountedMemory class to base namespace.

chrome/browser/ui/webui/theme_source.h

Index: chrome/browser/ui/webui/theme_source.h
===================================================================
--- chrome/browser/ui/webui/theme_source.h	(revision 134496)
+++ chrome/browser/ui/webui/theme_source.h	(working copy)
@@ -1,4 +1,4 @@
-// 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.
 
@@ -11,7 +11,10 @@
 #include "chrome/browser/ui/webui/chrome_url_data_manager.h"
 
 class Profile;
+
+namespace base {
 class RefCountedMemory;
+}
 
 class ThemeSource : public ChromeURLDataManager::DataSource {
  public:
@@ -41,7 +44,7 @@
   Profile* profile_;
 
   // We grab the CSS early so we don't have to go back to the UI thread later.
-  scoped_refptr<RefCountedMemory> css_bytes_;
+  scoped_refptr<base::RefCountedMemory> css_bytes_;
 
   DISALLOW_COPY_AND_ASSIGN(ThemeSource);
 };