Screen Orientation API: screen.orientation & orientationchange event

public/platform/WebScreenOrientation.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 WebScreenOrientation_h
+#define WebScreenOrientation_h
+
+namespace blink {
+
+enum WebScreenOrientation {
+    WebScreenOrientationPortraitPrimary = 1,
+    WebScreenOrientationLandscapePrimary = 1 << 1,
+    WebScreenOrientationPortraitSecondary = 1 << 2,
+    WebScreenOrientationLandscapeSecondary = 1 << 3,
+};
+
+} // namespace blink
+
+#endif // WebScreenOrientation_h