Use a direct include of the message_loop header in content/, part 4.

content/renderer/render_widget_fullscreen_pepper.cc

 // 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.
 
 #include "content/renderer/render_widget_fullscreen_pepper.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/command_line.h"
-#include "base/message_loop.h"
+#include "base/message_loop/message_loop.h"
 #include "content/common/gpu/client/gpu_channel_host.h"
 #include "content/common/view_messages.h"
 #include "content/public/common/content_switches.h"
 #include "content/renderer/gpu/render_widget_compositor.h"
 #include "content/renderer/pepper/pepper_platform_context_3d_impl.h"
 #include "content/renderer/render_thread_impl.h"
 #include "gpu/command_buffer/client/gles2_implementation.h"
 #include "skia/ext/platform_canvas.h"
 #include "third_party/WebKit/public/platform/WebCanvas.h"
 #include "third_party/WebKit/public/platform/WebGraphicsContext3D.h"
@@ skipping 475 matching lines @@
 }
 
 void RenderWidgetFullscreenPepper::SetDeviceScaleFactor(
     float device_scale_factor) {
   RenderWidget::SetDeviceScaleFactor(device_scale_factor);
   if (compositor_)
     compositor_->setDeviceScaleFactor(device_scale_factor);
 }
 
 }  // namespace content