Attempt four at landing the "histogram.h removed from message_loop.h" patch.

chrome/browser/gears_integration.cc

 // Copyright (c) 2009 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.
 
 #include "chrome/browser/gears_integration.h"
 
 #include <string>
 #include <vector>
 
 #include "base/base64.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
+#include "base/scoped_ptr.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/chrome_plugin_host.h"
 #include "chrome/common/chrome_plugin_util.h"
 #include "chrome/common/gears_api.h"
 #include "gfx/codec/png_codec.h"
 #include "googleurl/src/gurl.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "webkit/glue/dom_operations.h"
 
 // The following 2 helpers are borrowed from the Gears codebase.
@@ skipping 276 matching lines @@
 struct RunnableMethodTraits<QueryShortcutsCommand> {
   void RetainCallee(QueryShortcutsCommand* command) {}
   void ReleaseCallee(QueryShortcutsCommand* command) {}
 };
 
 void GearsQueryShortcuts(GearsQueryShortcutsCallback* callback) {
   CPHandleCommand(GEARSPLUGINCOMMAND_GET_SHORTCUT_LIST,
       new QueryShortcutsCommand(callback),
       0);
 }