Move WebDevice{Motion|Orientation} related Blink API headers into their own

public/platform/WebDeviceMotionListener.h

Index: public/platform/WebDeviceMotionListener.h
diff --git a/public/platform/WebDeviceMotionListener.h b/public/platform/WebDeviceMotionListener.h
index 6b49169c18e8b338f1da50fae50f385ac1635bdc..9f7ce485f2df1747c7eaac99ab45b38f2d63e5c2 100644
--- a/public/platform/WebDeviceMotionListener.h
+++ b/public/platform/WebDeviceMotionListener.h
@@ -1,50 +1 @@
-/*
- * Copyright (C) 2013 Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef WebDeviceMotionListener_h
-#define WebDeviceMotionListener_h
-
-#include "WebPlatformEventListener.h"
-
-namespace blink {
-
-class WebDeviceMotionData;
-
-class WebDeviceMotionListener : public WebPlatformEventListener {
-public:
-    // This method is called every time new device motion data is available.
-    virtual void didChangeDeviceMotion(const WebDeviceMotionData&) = 0;
-
-    virtual ~WebDeviceMotionListener() { }
-};
-
-} // namespace blink
-
-#endif // WebDeviceMotionListener_h
+#include "public/platform/modules/device_orientation/WebDeviceMotionListener.h"