Rename ContextDestructionObserver to ContextLifecycleObserver

Source/core/dom/ActiveDOMObject.cpp

 /*
  * Copyright (C) 2008 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 15 matching lines @@
 
 #include "config.h"
 #include "core/dom/ActiveDOMObject.h"
 
 #include "core/dom/ScriptExecutionContext.h"
 #include "core/dom/WebCoreMemoryInstrumentation.h"
 
 namespace WebCore {
 
 ActiveDOMObject::ActiveDOMObject(ScriptExecutionContext* scriptExecutionContext)
-    : ContextDestructionObserver(scriptExecutionContext, ActiveDOMObjectType)
+    : ContextLifecycleObserver(scriptExecutionContext, ActiveDOMObjectType)
     , m_pendingActivityCount(0)
 #if !ASSERT_DISABLED
     , m_suspendIfNeededCalled(false)
 #endif
 {
     if (!m_scriptExecutionContext)
         return;
 
     ASSERT(m_scriptExecutionContext->isContextThread());
 }
 
 ActiveDOMObject::~ActiveDOMObject()
 {
     // ActiveDOMObject may be inherited by a sub-class whose life-cycle
     // exceeds that of the associated ScriptExecutionContext. In those cases,
     // m_scriptExecutionContext would/should have been nullified by
-    // ContextDestructionObserver::contextDestroyed() (which we implement /
+    // ContextLifecycleObserver::contextDestroyed() (which we implement /
     // inherit). Hence, we should ensure that this is not 0 before use it
     // here.
     if (!m_scriptExecutionContext)
         return;
 
     ASSERT(m_suspendIfNeededCalled);
     ASSERT(m_scriptExecutionContext->isContextThread());
     observeContext(0, ActiveDOMObjectType);
 }
 
@@ skipping 31 matching lines @@
 {
 }
 
 void ActiveDOMObject::reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
 {
     MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::DOM);
 }
 
 
 } // namespace WebCore