Chromium-side implementation of DeviceMotion.

content/renderer/renderer_webkitplatformsupport_impl.cc

Index: content/renderer/renderer_webkitplatformsupport_impl.cc
diff --git a/content/renderer/renderer_webkitplatformsupport_impl.cc b/content/renderer/renderer_webkitplatformsupport_impl.cc
index c7e274782cde98582fd08da29feb1239d521e2aa..5723aac1c06fa7c68623ad026bc7a16847055533 100644
--- a/content/renderer/renderer_webkitplatformsupport_impl.cc
+++ b/content/renderer/renderer_webkitplatformsupport_impl.cc
@@ -82,6 +82,7 @@
 using content::RenderThread;
 using WebKit::WebAudioDevice;
 using WebKit::WebBlobRegistry;
+using WebKit::WebDeviceMotionDetector;
 using WebKit::WebFileInfo;
 using WebKit::WebFileSystem;
 using WebKit::WebFrame;
@@ -561,6 +562,21 @@ long long RendererWebKitPlatformSupportImpl::databaseGetSpaceAvailableForOrigin(
   return DatabaseUtil::DatabaseGetSpaceAvailable(origin_identifier);
 }
 
+//------------------------------------------------------------------------------
+
+WebDeviceMotionDetector*
+RendererWebKitPlatformSupportImpl::deviceMotionDetector() {
+  WebFrame* web_frame = WebFrame::frameForCurrentContext();
+  if (!web_frame)
+    return NULL;
+  RenderViewImpl* render_view = RenderViewImpl::FromWebView(web_frame->view());
+  if (!render_view)
+    return NULL;
+  return render_view->GetDeviceMotionDispatcher();
+}
+
+//------------------------------------------------------------------------------
+
 WebKit::WebSharedWorkerRepository*
 RendererWebKitPlatformSupportImpl::sharedWorkerRepository() {
   if (!CommandLine::ForCurrentProcess()->HasSwitch(