Rename FrameDestructionObserver to LocalFrameLifecycleObserver.

Source/modules/presentation/PresentationController.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 PresentationController_h
 #define PresentationController_h
 
-#include "core/frame/FrameDestructionObserver.h"
+#include "core/frame/LocalFrameLifecycleObserver.h"
 #include "modules/presentation/Presentation.h"
 #include "platform/Supplementable.h"
 #include "platform/heap/Handle.h"
 #include "public/platform/modules/presentation/WebPresentationClient.h"
 #include "public/platform/modules/presentation/WebPresentationController.h"
 
 namespace blink {
 
 class LocalFrame;
 class WebPresentationSessionClient;
 
 // The coordinator between the various page exposed properties and the content
 // layer represented via |WebPresentationClient|.
 class PresentationController final
     : public NoBaseWillBeGarbageCollectedFinalized<PresentationController>
     , public WillBeHeapSupplement<LocalFrame>
-    , public FrameDestructionObserver
+    , public LocalFrameLifecycleObserver
     , public WebPresentationController {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(PresentationController);
     WTF_MAKE_NONCOPYABLE(PresentationController);
 public:
     virtual ~PresentationController();
 
     static PassOwnPtrWillBeRawPtr<PresentationController> create(LocalFrame&, WebPresentationClient*);
 
     static const char* supplementName();
     static PresentationController* from(LocalFrame&);
@@ skipping 20 matching lines @@
 
     // Called when the frame wants to close an existing presentation.
     void closeSession(const String& url, const String& presentationId);
 
     // Connects the |Presentation| object with this controller.
     void setPresentation(Presentation*);
 
 private:
     PresentationController(LocalFrame&, WebPresentationClient*);
 
-    // Implementation of FrameDestructionObserver.
+    // Implementation of LocalFrameLifecycleObserver.
     virtual void willDetachFrameHost() override;
 
     WebPresentationClient* m_client;
     PersistentWillBeMember<Presentation> m_presentation;
 };
 
 } // namespace blink
 
 #endif // PresentationController_h