Rename ContextDestructionObserver to ContextLifecycleObserver

Source/core/dom/ScriptExecutionContext.h

Index: Source/core/dom/ScriptExecutionContext.h
diff --git a/Source/core/dom/ScriptExecutionContext.h b/Source/core/dom/ScriptExecutionContext.h
index f285f869bc708e10e2a2cda87794450c1891c3df..4bedfe807f3e975f33a450f27d895fdb8493f08c 100644
--- a/Source/core/dom/ScriptExecutionContext.h
+++ b/Source/core/dom/ScriptExecutionContext.h
@@ -93,9 +93,9 @@ public:
     // Called after the construction of an ActiveDOMObject to synchronize suspend state.
     void suspendActiveDOMObjectIfNeeded(ActiveDOMObject*);
 
-    // Called from the constructor and destructors of ContextDestructionObserver
-    void wasObservedBy(ContextDestructionObserver*, ContextDestructionObserver::Type as);
-    void wasUnobservedBy(ContextDestructionObserver*, ContextDestructionObserver::Type as);
+    // Called from the constructor and destructors of ContextLifecycleObserver
+    void wasObservedBy(ContextLifecycleObserver*, ContextLifecycleObserver::Type as);
+    void wasUnobservedBy(ContextLifecycleObserver*, ContextLifecycleObserver::Type as);
 
     // MessagePort is conceptually a kind of ActiveDOMObject, but it needs to be tracked separately for message dispatch.
     void processMessagePortMessagesSoon();