Implement ScreenOrientationProvider for Chrome Android.

content/public/common/screen_orientation_values.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 CONTENT_PUBLIC_COMMON_SCREEN_ORIENTATION_VALUES_H_
+#define CONTENT_PUBLIC_COMMON_SCREEN_ORIENTATION_VALUES_H_
+
+namespace content {
+
+enum ScreenOrientationValues {
+#define DEFINE_SCREEN_ORIENTATION_VALUE(name, value) name = value,
+#include "content/public/common/screen_orientation_values_list.h"
+#undef DEFINE_SCREEN_ORIENTATION_VALUE
+};
+
+} // namespace content
+
+#endif  // CONTENT_PUBLIC_COMMON_SCREEN_ORIENTATION_VALUES_H_