Implement ScreenOrientationDelegate on ChromeOS

content/public/browser/screen_orientation_delegate.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_BROWSER_SCREEN_ORIENTATION_DELEGATE_H_
 #define CONTENT_PUBLIC_BROWSER_SCREEN_ORIENTATION_DELEGATE_H_
 
 #include "base/macros.h"
 #include "content/common/content_export.h"
 #include "third_party/WebKit/public/platform/WebScreenOrientationLockType.h"
 
 namespace content {
 
 class WebContents;
 
 // Can be implemented to provide platform specific functionality for
 // ScreenOrientationProvider.
 class CONTENT_EXPORT ScreenOrientationDelegate {
  public:
   ScreenOrientationDelegate() {};
   virtual ~ScreenOrientationDelegate() {}
 
   // Returns true if the tab must be fullscreen in order for
   // ScreenOrientationProvider to respond to requests.
   virtual bool FullScreenRequired(WebContents* web_contents) = 0;
 
   // Lock display to the given orientation.
-  virtual void Lock(blink::WebScreenOrientationLockType lock_orientation) = 0;
+  virtual void Lock(WebContents* web_contents,
+                    blink::WebScreenOrientationLockType lock_orientation) = 0;
 
   // Are ScreenOrientationProvider requests currently supported by the platform.
   virtual bool ScreenOrientationProviderSupported() = 0;
 
   // Unlocks the display, allowing hardware rotation to resume.
-  virtual void Unlock() = 0;
+  virtual void Unlock(WebContents* web_contents) = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ScreenOrientationDelegate);
 };
 
 } // namespace content
 
 #endif // CONTENT_PUBLIC_BROWSER_SCREEN_ORIENTATION_DELEGATE_H_