Rename ContextDestructionObserver to ContextLifecycleObserver

Source/modules/speech/SpeechSynthesisUtterance.h

Index: Source/modules/speech/SpeechSynthesisUtterance.h
diff --git a/Source/modules/speech/SpeechSynthesisUtterance.h b/Source/modules/speech/SpeechSynthesisUtterance.h
index b386661c26243ff09d97bb4f95c9882c85754fcc..211b96f7f3fbed9f39170c28bc6d65d38c6d5715 100644
--- a/Source/modules/speech/SpeechSynthesisUtterance.h
+++ b/Source/modules/speech/SpeechSynthesisUtterance.h
@@ -27,7 +27,7 @@
 #define SpeechSynthesisUtterance_h
 
 #include "bindings/v8/ScriptWrappable.h"
-#include "core/dom/ContextDestructionObserver.h"
+#include "core/dom/ContextLifecycleObserver.h"
 #include "core/dom/EventTarget.h"
 #include "core/platform/PlatformSpeechSynthesisUtterance.h"
 #include "modules/speech/SpeechSynthesisVoice.h"
@@ -36,7 +36,7 @@
 
 namespace WebCore {
 
-class SpeechSynthesisUtterance : public PlatformSpeechSynthesisUtteranceClient, public ScriptWrappable, public RefCounted<SpeechSynthesisUtterance>, public ContextDestructionObserver, public EventTarget {
+class SpeechSynthesisUtterance : public PlatformSpeechSynthesisUtteranceClient, public ScriptWrappable, public RefCounted<SpeechSynthesisUtterance>, public ContextLifecycleObserver, public EventTarget {
 public:
     static PassRefPtr<SpeechSynthesisUtterance> create(ScriptExecutionContext*, const String&);