[ScreenOrientation] De-associate device.mojom.ScreenOrientation from legacy IPC channel.

third_party/WebKit/public/platform/modules/screen_orientation/WebScreenOrientationClient.h

-// Copyright 2015 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 WebScreenOrientationClient_h
-#define WebScreenOrientationClient_h
-
-#include "public/platform/modules/screen_orientation/WebScreenOrientationLockType.h"
-#include <memory>
-
-namespace blink {
-
-class WebLockOrientationCallback;
-
-// Client handling screen orientation locking for a given WebFrame.
-class WebScreenOrientationClient {
- public:
-  virtual ~WebScreenOrientationClient() {}
-
-  // Request a screen orientation lock. The implementation will own the
-  // callback.
-  virtual void lockOrientation(WebScreenOrientationLockType,
-                               std::unique_ptr<WebLockOrientationCallback>) = 0;
-
-  // Unlock the screen orientation. No-op if the screen orientation was not
-  // locked.
-  virtual void unlockOrientation() = 0;
-
-  virtual void startAccurateListen() = 0;
-
-  virtual void stopAccurateListen() = 0;
-};
-
-}  // namespace blink
-
-#endif  // WebScreenOrientationClient_h