Use a direct include of the message_loop header in content/, part 3.

content/public/test/render_view_test.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_PUBLIC_TEST_RENDER_VIEW_TEST_H_
 #define CONTENT_PUBLIC_TEST_RENDER_VIEW_TEST_H_
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/message_loop.h"
+#include "base/message_loop/message_loop.h"
 #include "base/strings/string16.h"
 #include "content/public/browser/native_web_keyboard_event.h"
 #include "content/public/common/main_function_params.h"
 #include "content/public/renderer/content_renderer_client.h"
 #include "content/public/test/mock_render_thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/WebKit/public/platform/Platform.h"
 #include "third_party/WebKit/public/web/WebFrame.h"
 
 namespace WebKit {
@@ skipping 115 matching lines @@
   scoped_ptr<MainFunctionParams> params_;
   scoped_ptr<CommandLine> command_line_;
 
  private:
   void GoToOffset(int offset, const WebKit::WebHistoryItem& history_item);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_TEST_RENDER_VIEW_TEST_H_