Rename ContextDestructionObserver to ContextLifecycleObserver

Source/modules/speech/SpeechSynthesisUtterance.cpp

 /*
  * Copyright (C) 2013 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 16 matching lines @@
 #include "modules/speech/SpeechSynthesisUtterance.h"
 
 namespace WebCore {
     
 PassRefPtr<SpeechSynthesisUtterance> SpeechSynthesisUtterance::create(ScriptExecutionContext* context, const String& text)
 {
     return adoptRef(new SpeechSynthesisUtterance(context, text));
 }
 
 SpeechSynthesisUtterance::SpeechSynthesisUtterance(ScriptExecutionContext* context, const String& text)
-    : ContextDestructionObserver(context)
+    : ContextLifecycleObserver(context)
     , m_platformUtterance(PlatformSpeechSynthesisUtterance::create(this))
 {
     ScriptWrappable::init(this);
     m_platformUtterance->setText(text);
 }
 
 SpeechSynthesisUtterance::~SpeechSynthesisUtterance()
 {
     m_platformUtterance->setClient(0);
 }
     
 ScriptExecutionContext* SpeechSynthesisUtterance::scriptExecutionContext() const
 {
-    return ContextDestructionObserver::scriptExecutionContext();
+    return ContextLifecycleObserver::scriptExecutionContext();
 }    
     
 const AtomicString& SpeechSynthesisUtterance::interfaceName() const
 {
     return eventNames().interfaceForSpeechSynthesisUtterance;
 }
 
 SpeechSynthesisVoice* SpeechSynthesisUtterance::voice() const
 {
     return m_voice.get();
 }
 
 void SpeechSynthesisUtterance::setVoice(SpeechSynthesisVoice* voice)
 {
     // Cache our own version of the SpeechSynthesisVoice so that we don't have to do some lookup
     // to go from the platform voice back to the speech synthesis voice in the read property.
     m_voice = voice;
     
     if (voice)
         m_platformUtterance->setVoice(voice->platformVoice());
 }
 
 } // namespace WebCore