Implement the content/renderer and content/browser part of the Device Motion API.

content/renderer/renderer_webkitplatformsupport_impl.h

Index: content/renderer/renderer_webkitplatformsupport_impl.h
diff --git a/content/renderer/renderer_webkitplatformsupport_impl.h b/content/renderer/renderer_webkitplatformsupport_impl.h
index a3005adb2aa4fa382621b5522eb4e73c2afa28fc..98152c7ce63704770c18f240289a278b9a316fc7 100644
--- a/content/renderer/renderer_webkitplatformsupport_impl.h
+++ b/content/renderer/renderer_webkitplatformsupport_impl.h
@@ -28,6 +28,7 @@ class WebGraphicsContext3DProvider;
 }
 
 namespace content {
+class DeviceMotionEventPump;
 class GamepadSharedMemoryReader;
 class RendererClipboardClient;
 class ThreadSafeSender;
@@ -120,6 +121,8 @@ class CONTENT_EXPORT RendererWebKitPlatformSupportImpl
   virtual WebKit::WebGraphicsContext3DProvider*
       createSharedOffscreenGraphicsContext3DProvider();
   virtual WebKit::WebCompositorSupport* compositorSupport();
+  virtual void setDeviceMotionListener(
+      WebKit::WebDeviceMotionListener* listener) OVERRIDE;
 
   // Disables the WebSandboxSupport implementation for testing.
   // Tests that do not set up a full sandbox environment should call
@@ -172,6 +175,8 @@ class CONTENT_EXPORT RendererWebKitPlatformSupportImpl
 
   scoped_ptr<GamepadSharedMemoryReader> gamepad_shared_memory_reader_;
 
+  scoped_ptr<DeviceMotionEventPump> device_motion_event_pump_;
+
   scoped_refptr<ThreadSafeSender> thread_safe_sender_;
 
   scoped_refptr<cc::ContextProvider> shared_offscreen_context_;