[For trybots test] [ScreenOrientation] Hide ScreenOrientationProvider inside WebContentsImpl.

content/browser/screen_orientation/screen_orientation.h

-// Copyright 2016 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_BROWSER_SCREEN_ORIENTATION_SCREEN_ORIENTATION_H
-#define CONTENT_BROWSER_SCREEN_ORIENTATION_SCREEN_ORIENTATION_H
-
-#include "base/memory/weak_ptr.h"
-#include "content/public/browser/web_contents_binding_set.h"
-#include "content/public/browser/web_contents_observer.h"
-#include "device/screen_orientation/public/interfaces/screen_orientation.mojom.h"
-
-namespace content {
-
-class ScreenOrientationProvider;
-class WebContents;
-
-class ScreenOrientation : public device::mojom::ScreenOrientation,
-                          public WebContentsObserver {
- public:
-  explicit ScreenOrientation(WebContents* web_contents);
-  ~ScreenOrientation() override;
-
-  ScreenOrientationProvider* GetScreenOrientationProvider();
-
- private:
-  // ScreenOrientation:
-  void LockOrientation(blink::WebScreenOrientationLockType orientation,
-                       const LockOrientationCallback& callback) override;
-  void UnlockOrientation() override;
-
-  // WebContentsObserver:
-  void DidFinishNavigation(NavigationHandle* navigation_handle) override;
-
-  std::unique_ptr<ScreenOrientationProvider> provider_;
-  WebContentsFrameBindingSet<device::mojom::ScreenOrientation> bindings_;
-  base::WeakPtrFactory<ScreenOrientation> weak_factory_;
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_SCREEN_ORIENTATION_SCREEN_ORIENTATION_H