[ScreenOrientation] Merge mojo interface ScreenOrientationListener into ScreenOrientation

third_party/WebKit/Source/modules/screen_orientation/ScreenOrientationControllerImpl.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 ScreenOrientationControllerImpl_h
 #define ScreenOrientationControllerImpl_h
 
 #include "core/dom/Document.h"
-#include "core/frame/PlatformEventController.h"
 #include "core/frame/ScreenOrientationController.h"
+#include "core/page/PageVisibilityObserver.h"
 #include "modules/ModulesExport.h"
 #include "public/platform/modules/screen_orientation/WebLockOrientationCallback.h"
 #include "public/platform/modules/screen_orientation/WebScreenOrientationLockType.h"
 #include "public/platform/modules/screen_orientation/WebScreenOrientationType.h"
-#include <memory>
 
 namespace blink {
 
 class ScreenOrientation;
 class WebScreenOrientationClient;
 
 class MODULES_EXPORT ScreenOrientationControllerImpl final
     : public ScreenOrientationController,
       public ContextLifecycleObserver,
-      public PlatformEventController {
+      public PageVisibilityObserver {
   USING_GARBAGE_COLLECTED_MIXIN(ScreenOrientationControllerImpl);
   WTF_MAKE_NONCOPYABLE(ScreenOrientationControllerImpl);
 
  public:
   ~ScreenOrientationControllerImpl() override;
 
   void setOrientation(ScreenOrientation*);
   void notifyOrientationChanged();
 
   // Implementation of ScreenOrientationController.
   void lock(WebScreenOrientationLockType,
             std::unique_ptr<WebLockOrientationCallback>) override;
   void unlock() override;
   bool maybeHasActiveLock() const override;
 
   static void provideTo(LocalFrame&, WebScreenOrientationClient*);
   static ScreenOrientationControllerImpl* from(LocalFrame&);
 
   DECLARE_VIRTUAL_TRACE();
 
  private:
   ScreenOrientationControllerImpl(LocalFrame&, WebScreenOrientationClient*);
 
   static WebScreenOrientationType computeOrientation(const IntRect&, uint16_t);
 
-  // Inherited from PlatformEventController.
-  void didUpdateData() override;
-  void registerWithDispatcher() override;
-  void unregisterWithDispatcher() override;
-  bool hasLastData() override;
-
-  // Inherited from ContextLifecycleObserver and PageVisibilityObserver.
+  // Inherited from ContextLifecycleObserver.
   void contextDestroyed(ExecutionContext*) override;
+  // Inherited from PageVisibilityObserver.
   void pageVisibilityChanged() override;
 
-  void notifyDispatcher();
+  void notifyAccurateListen();
 
   void updateOrientation();
 
   void dispatchEventTimerFired(TimerBase*);
 
   bool isActive() const;
   bool isVisible() const;
   bool isActiveAndVisible() const;
 
   Member<ScreenOrientation> m_orientation;
   WebScreenOrientationClient* m_client;
   TaskRunnerTimer<ScreenOrientationControllerImpl> m_dispatchEventTimer;
   bool m_activeLock = false;
+  bool m_startedAccurateListen = false;
 };
 
 }  // namespace blink
 
 #endif  // ScreenOrientationControllerImpl_h