Implement ScreenOrientationDelegate on ChromeOS

ash/system/chromeos/screen_orientation/screen_orientation_delegate_ash.h

Index: ash/system/chromeos/screen_orientation/screen_orientation_delegate_ash.h
diff --git a/ash/system/chromeos/screen_orientation/screen_orientation_delegate_ash.h b/ash/system/chromeos/screen_orientation/screen_orientation_delegate_ash.h
new file mode 100644
index 0000000000000000000000000000000000000000..8353c253ca95ee7b84269f46d95f47895613ae75
--- /dev/null
+++ b/ash/system/chromeos/screen_orientation/screen_orientation_delegate_ash.h
@@ -0,0 +1,37 @@
+// 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 ASH_SYSTEM_CHROMEOS_SCREEN_ORIENTATION_SCREEN_ORIENTATION_DELEGATE_ASH_H_
+#define ASH_SYSTEM_CHROMEOS_SCREEN_ORIENTATION_SCREEN_ORIENTATION_DELEGATE_ASH_H_
+
+#include "base/macros.h"
+#include "content/public/browser/screen_orientation_delegate.h"
+#include "third_party/WebKit/public/platform/WebScreenOrientationLockType.h"
+
+namespace content {
+class WebContents;
+}
+
+namespace ash {
+
+// Implements ChromeOS specific functionality for ScreenOrientationProvider.
+class ScreenOrientationDelegateAsh : public content::ScreenOrientationDelegate {
+ public:
+  ScreenOrientationDelegateAsh();
+  virtual ~ScreenOrientationDelegateAsh();
+
+  // content::ScreenOrientationDelegate:
+  virtual bool FullScreenRequired(content::WebContents* web_contents) override;
+  virtual void Lock(
+      blink::WebScreenOrientationLockType lock_orientation) override;
+  virtual bool ScreenOrientationProviderSupported() override;
+  virtual void Unlock() override;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ScreenOrientationDelegateAsh);
+};
+
+}  // namespace ash
+
+#endif  // ASH_SYSTEM_CHROMEOS_SCREEN_ORIENTATION_SCREEN_ORIENTATION_DELEGATE_ASH_H_