Rename ContextDestructionObserver to ContextLifecycleObserver

Source/bindings/v8/ActiveDOMCallback.h

 /*
  * Copyright (C) 2010, 2012 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef ActiveDOMCallback_h
 #define ActiveDOMCallback_h
 
-#include "core/dom/ContextDestructionObserver.h"
+#include "core/dom/ContextLifecycleObserver.h"
 #include "wtf/OwnPtr.h"
 
 namespace WebCore {
 
 class ScriptExecutionContext;
 
 // A base class that prevents binding callbacks from executing when
 // active dom objects are stopped or suspended, and is used by the
 // generated callback v8 bindings code to avoid erroneously CRASH()'ing
 // after script execution on a worker has been scheduled to terminate.
 //
 // Should only be created, used, and destroyed on the script execution
 // context thread.
-class ActiveDOMCallback : public ContextDestructionObserver {
+class ActiveDOMCallback : public ContextLifecycleObserver {
 public:
     ActiveDOMCallback(ScriptExecutionContext* context);
     virtual ~ActiveDOMCallback();
 
     bool canInvokeCallback() const;
     bool isScriptControllerTerminating() const;
 };
 
 } // namespace WebCore
 
 #endif // ActiveDOMCallback_h