Rename ContextDestructionObserver to ContextLifecycleObserver

Source/core/dom/ScriptExecutionContext.cpp

Index: Source/core/dom/ScriptExecutionContext.cpp
diff --git a/Source/core/dom/ScriptExecutionContext.cpp b/Source/core/dom/ScriptExecutionContext.cpp
index f0128f58406ad670e6d75e083851523d2355ee94..e69fff8a7d8bb9a27cf38516df504f9cffb15ee6 100644
--- a/Source/core/dom/ScriptExecutionContext.cpp
+++ b/Source/core/dom/ScriptExecutionContext.cpp
@@ -46,7 +46,7 @@
 
 namespace WTF {
 
-template<> struct SequenceMemoryInstrumentationTraits<WebCore::ContextDestructionObserver*> {
+template<> struct SequenceMemoryInstrumentationTraits<WebCore::ContextLifecycleObserver*> {
     template <typename I> static void reportMemoryUsage(I, I, MemoryClassInfo&) { }
 };
 
@@ -194,12 +194,12 @@ void ScriptExecutionContext::suspendActiveDOMObjectIfNeeded(ActiveDOMObject* obj
         object->suspend(m_reasonForSuspendingActiveDOMObjects);
 }
 
-void ScriptExecutionContext::wasObservedBy(ContextDestructionObserver* observer, ContextDestructionObserver::Type as)
+void ScriptExecutionContext::wasObservedBy(ContextLifecycleObserver* observer, ContextLifecycleObserver::Type as)
 {
     lifecycleNotifier()->addObserver(observer, as);
 }
 
-void ScriptExecutionContext::wasUnobservedBy(ContextDestructionObserver* observer, ContextDestructionObserver::Type as)
+void ScriptExecutionContext::wasUnobservedBy(ContextLifecycleObserver* observer, ContextLifecycleObserver::Type as)
 {
     lifecycleNotifier()->removeObserver(observer, as);
 }