MediaSession should use ContextClient instead of ContextLifecycleObserver

third_party/WebKit/Source/modules/mediasession/MediaSession.cpp

 // 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.
 
 #include "modules/mediasession/MediaSession.h"
 
 #include "core/dom/Document.h"
 #include "core/dom/DocumentUserGestureToken.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/events/Event.h"
@@ skipping 75 matching lines @@
     return mojom::blink::MediaSessionPlaybackState::NONE;
   if (stateName == "paused")
     return mojom::blink::MediaSessionPlaybackState::PAUSED;
   DCHECK_EQ(stateName, "playing");
   return mojom::blink::MediaSessionPlaybackState::PLAYING;
 }
 
 }  // anonymous namespace
 
 MediaSession::MediaSession(ExecutionContext* executionContext)
-    : ContextLifecycleObserver(executionContext),
+    : ContextClient(executionContext),
       m_playbackState(mojom::blink::MediaSessionPlaybackState::NONE),
       m_clientBinding(this) {}
 
 MediaSession* MediaSession::create(ExecutionContext* executionContext) {
   return new MediaSession(executionContext);
 }
 
 void MediaSession::dispose() {
   m_clientBinding.Close();
 }
@@ skipping 31 matching lines @@
 
   service->SetMetadata(MediaMetadataSanitizer::sanitizeAndConvertToMojo(
       m_metadata, getExecutionContext()));
 }
 
 const WTF::AtomicString& MediaSession::interfaceName() const {
   return EventTargetNames::MediaSession;
 }
 
 ExecutionContext* MediaSession::getExecutionContext() const {
-  return ContextLifecycleObserver::getExecutionContext();
+  return ContextClient::getExecutionContext();
 }
 
 mojom::blink::MediaSessionService* MediaSession::getService() {
   if (m_service)
     return m_service.get();
   if (!getExecutionContext())
     return nullptr;
 
   DCHECK(getExecutionContext()->isDocument())
       << "MediaSession::getService() is only available from a frame";
@@ skipping 41 matching lines @@
   DCHECK(getExecutionContext()->isDocument());
   Document* document = toDocument(getExecutionContext());
   UserGestureIndicator gestureIndicator(
       DocumentUserGestureToken::create(document));
   dispatchEvent(Event::create(mojomActionToEventName(action)));
 }
 
 DEFINE_TRACE(MediaSession) {
   visitor->trace(m_metadata);
   EventTargetWithInlineData::trace(visitor);
-  ContextLifecycleObserver::trace(visitor);
+  ContextClient::trace(visitor);
 }
 
 }  // namespace blink