Implement the Blink part of the Device Motion API.

Tools/DumpRenderTree/chromium/TestRunner/src/MockWebDeviceMotionListener.h

Index: Tools/DumpRenderTree/chromium/TestRunner/src/MockWebDeviceMotionListener.h
diff --git a/Tools/DumpRenderTree/chromium/TestRunner/src/MockWebDeviceMotionListener.h b/Tools/DumpRenderTree/chromium/TestRunner/src/MockWebDeviceMotionListener.h
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index 0000000000000000000000000000000000000000..71807ab234e90094b9c8a9e0e863c26772f8c4d1
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+++ b/Tools/DumpRenderTree/chromium/TestRunner/src/MockWebDeviceMotionListener.h
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+// Copyright (c) 2013 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 MockWebDeviceMotionListener_h
+#define MockWebDeviceMotionListener_h
+
+#include "base/memory/scoped_ptr.h"
+#include "base/shared_memory.h"
+#include "base/time.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebDeviceMotionListener.h"
+
+namespace WebKit {
+class WebDeviceMotionData;
+class WebDeviceMotionListener;
+}
+
+namespace WebTestRunner {
+
+class MockWebDeviceMotionListener : public WebKit::WebDeviceMotionListener {
+public:
+    MockWebDeviceMotionListener() { }
+    virtual ~MockWebDeviceMotionListener() { }
+
+    virtual void didChangeDeviceMotion(const WebKit::WebDeviceMotionData&);
+
+    // Sets the listener to receive updates for device motion data at
+    // regular intervals.
+    virtual void setListener(WebKit::WebDeviceMotionListener*);
+
+private:
+    WebKit::WebDeviceMotionListener* m_listener;
+
+};
+
+} // namespace WebTestRunner
+
+#endif // MockWebDeviceMotionListener_h