Rename PageLifecycleObserver to PageVisibilityObserver

third_party/WebKit/Source/modules/wake_lock/ScreenWakeLock.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 ScreenWakeLock_h
 #define ScreenWakeLock_h
 
 #include "core/dom/ContextLifecycleObserver.h"
-#include "core/page/PageLifecycleObserver.h"
+#include "core/page/PageVisibilityObserver.h"
 #include "modules/ModulesExport.h"
 #include "public/platform/modules/wake_lock/wake_lock_service.mojom-blink.h"
 #include "wtf/Noncopyable.h"
 
 namespace blink {
 
 class LocalFrame;
 class Screen;
 class ServiceRegistry;
 
-class MODULES_EXPORT ScreenWakeLock final : public GarbageCollectedFinalized<ScreenWakeLock>, public Supplement<LocalFrame>, public ContextLifecycleObserver, public PageLifecycleObserver {
+class MODULES_EXPORT ScreenWakeLock final : public GarbageCollectedFinalized<ScreenWakeLock>, public Supplement<LocalFrame>, public ContextLifecycleObserver, public PageVisibilityObserver {
     USING_GARBAGE_COLLECTED_MIXIN(ScreenWakeLock);
     WTF_MAKE_NONCOPYABLE(ScreenWakeLock);
 public:
     static bool keepAwake(Screen&);
     static void setKeepAwake(Screen&, bool);
 
     static const char* supplementName();
     static ScreenWakeLock* from(LocalFrame*);
 
     ~ScreenWakeLock() = default;
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     explicit ScreenWakeLock(LocalFrame&);
 
-    // Inherited from PageLifecycleObserver.
+    // Inherited from PageVisibilityObserver.
     void pageVisibilityChanged() override;
     void contextDestroyed() override;
 
     bool keepAwake() const;
     void setKeepAwake(bool);
 
     static ScreenWakeLock* fromScreen(Screen&);
     void notifyService();
 
     mojom::blink::WakeLockServicePtr m_service;
     bool m_keepAwake;
 };
 
 } // namespace blink
 
 #endif // ScreenWakeLock_h