Rename FrameDestructionObserver to LocalFrameLifecycleObserver.

Source/core/frame/LocalFrameLifecycleNotifier.h

Index: Source/core/frame/LocalFrameLifecycleNotifier.h
diff --git a/Source/core/frame/LocalFrameLifecycleNotifier.h b/Source/core/frame/LocalFrameLifecycleNotifier.h
index cd3c85b1d515b66e484fcd04daee66c03c8e5baa..e2a18cd0cde73bc03f1f6434cf9cc43b4131c9cf 100644
--- a/Source/core/frame/LocalFrameLifecycleNotifier.h
+++ b/Source/core/frame/LocalFrameLifecycleNotifier.h
@@ -11,10 +11,10 @@
 
 namespace blink {
 
-class FrameDestructionObserver;
+class LocalFrameLifecycleObserver;
 class LocalFrame;
 
-class CORE_EXPORT LocalFrameLifecycleNotifier : public LifecycleNotifier<LocalFrame, FrameDestructionObserver> {
+class CORE_EXPORT LocalFrameLifecycleNotifier : public LifecycleNotifier<LocalFrame, LocalFrameLifecycleObserver> {
 public:
     void notifyWillDetachFrameHost();
 };