Move a bunch of code in content\renderer to the content namespace.

content/renderer/device_orientation_dispatcher.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_RENDERER_DEVICE_ORIENTATION_DISPATCHER_H_
 #define CONTENT_RENDERER_DEVICE_ORIENTATION_DISPATCHER_H_
 
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebDeviceOrientationClient.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebDeviceOrientation.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "content/public/renderer/render_view_observer.h"
 
+struct DeviceOrientationMsg_Updated_Params;
+
+namespace content {
 class RenderViewImpl;
 
-struct DeviceOrientationMsg_Updated_Params;
-
-class DeviceOrientationDispatcher : public content::RenderViewObserver,
+class DeviceOrientationDispatcher : public RenderViewObserver,
                                     public WebKit::WebDeviceOrientationClient {
  public:
   explicit DeviceOrientationDispatcher(RenderViewImpl* render_view);
   virtual ~DeviceOrientationDispatcher();
 
  private:
   // RenderView::Observer implementation.
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
   // From WebKit::WebDeviceOrientationClient.
   virtual void setController(
       WebKit::WebDeviceOrientationController* controller);
   virtual void startUpdating();
   virtual void stopUpdating();
   virtual WebKit::WebDeviceOrientation lastOrientation() const;
 
   void OnDeviceOrientationUpdated(
       const DeviceOrientationMsg_Updated_Params& p);
 
   scoped_ptr<WebKit::WebDeviceOrientationController> controller_;
   WebKit::WebDeviceOrientation last_orientation_;
   bool started_;
 };
 
+}  // namespace content
+
 #endif  // CONTENT_RENDERER_DEVICE_ORIENTATION_DISPATCHER_H_