diff -r 000000000000 -r 6474c204b198 dom/base/ScreenOrientation.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/base/ScreenOrientation.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,27 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_dom_ScreenOrientation_h
+#define mozilla_dom_ScreenOrientation_h
+
+namespace mozilla {
+namespace dom {
+
+// Make sure that any change here is also made in
+// * mobile/android/base/GeckoScreenOrientationListener.java
+typedef uint32_t ScreenOrientation;
+
+static const ScreenOrientation eScreenOrientation_None               = 0;
+static const ScreenOrientation eScreenOrientation_PortraitPrimary    = 1u << 0;
+static const ScreenOrientation eScreenOrientation_PortraitSecondary  = 1u << 1;
+static const ScreenOrientation eScreenOrientation_LandscapePrimary   = 1u << 2;
+static const ScreenOrientation eScreenOrientation_LandscapeSecondary = 1u << 3;
+//eScreenOrientation_Default will use the natural orientation for the deivce,
+//it could be PortraitPrimary or LandscapePrimary depends on display resolution
+static const ScreenOrientation eScreenOrientation_Default            = 1u << 4;
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_ScreenOrientation_h