Screen Orientation API: screen.orientation & orientationchange event

public/platform/WebScreenOrientationListener.h

+// Copyright 2014 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 WebScreenOrientationListener_h
+#define WebScreenOrientationListener_h
+
+#include "WebScreenOrientation.h"
+
+namespace blink {
+
+class WebScreenOrientationListener {
+public:
+    virtual ~WebScreenOrientationListener() { }
+
+    // This method is called every time the screen orientation changes.
+    virtual void didChangeScreenOrientation(WebScreenOrientation) = 0;
+};
+
+} // namespace blink
+
+#endif // WebScreenOrientationListener_h