Implement the Blink part of the Device Motion API.

Source/Platform/chromium/public/WebDeviceMotionListener.h

Index: Source/Platform/chromium/public/WebDeviceMotionListener.h
diff --git a/Source/WebKit/chromium/public/WebMediaSource.h b/Source/Platform/chromium/public/WebDeviceMotionListener.h
similarity index 81%
copy from Source/WebKit/chromium/public/WebMediaSource.h
copy to Source/Platform/chromium/public/WebDeviceMotionListener.h
index ae7864b3090d45d155dce3a55872d6f6a27830c4..ccc9318ad0328d237735df05ed07b9d34bc04b6e 100644
--- a/Source/WebKit/chromium/public/WebMediaSource.h
+++ b/Source/Platform/chromium/public/WebDeviceMotionListener.h
@@ -28,22 +28,20 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef WebMediaSource_h
-#define WebMediaSource_h
-
-#include "../../../Platform/chromium/public/WebURL.h"
-#include "WebTimeRange.h"
+#ifndef WebDeviceMotionListener_h
+#define WebDeviceMotionListener_h
 
 namespace WebKit {
 
-class WebMediaSourceClient;
+class WebDeviceMotionData;
 
-class WebMediaSource {
+// Abstract interface for the Device Motion API listener.

[Peter Beverloo, 2013/05/08 13:15:01]

This comment doesn't add anything, I'd remove it.

[timvolodine, 2013/05/09 10:08:28]

Done.

+class WebDeviceMotionListener {
 public:
-    virtual ~WebMediaSource() { };
-    virtual void open(WebMediaSourceClient*) = 0;
+    // This method is called every time new motion data is available.

[Peter Beverloo, 2013/05/08 13:15:01]

You call it "device motion data" elsewhere, let's stay consistent?

[timvolodine, 2013/05/09 10:08:28]

Done.

+    virtual void didChangeDeviceMotion(const WebDeviceMotionData&) = 0;
 };
 
 } // namespace WebKit
 
-#endif
+#endif // WebDeviceMotionListener_h