Rename FrameDestructionObserver to LocalFrameLifecycleObserver.

Source/core/frame/LocalFrameLifecycleObserver.h

Index: Source/core/frame/LocalFrameLifecycleObserver.h
diff --git a/Source/core/frame/FrameDestructionObserver.h b/Source/core/frame/LocalFrameLifecycleObserver.h
similarity index 85%
rename from Source/core/frame/FrameDestructionObserver.h
rename to Source/core/frame/LocalFrameLifecycleObserver.h
index 98b1403c4bab26b6a147a57b2bdef9b843d01cd3..b7109cee619ba5857846d64f60a72ec4af4b0f94 100644
--- a/Source/core/frame/FrameDestructionObserver.h
+++ b/Source/core/frame/LocalFrameLifecycleObserver.h
@@ -23,8 +23,8 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef FrameDestructionObserver_h
-#define FrameDestructionObserver_h
+#ifndef LocalFrameLifecycleObserver_h
+#define LocalFrameLifecycleObserver_h
 
 #include "core/CoreExport.h"
 #include "core/frame/LocalFrame.h"
@@ -36,7 +36,7 @@ namespace blink {
 class LocalFrame;
 class LocalFrameLifecycleNotifier;
 
-class CORE_EXPORT FrameDestructionObserver : public LifecycleObserver<LocalFrame, FrameDestructionObserver, LocalFrameLifecycleNotifier> {
+class CORE_EXPORT LocalFrameLifecycleObserver : public LifecycleObserver<LocalFrame, LocalFrameLifecycleObserver, LocalFrameLifecycleNotifier> {
 public:
     virtual void willDetachFrameHost() { }
     virtual void contextDestroyed()
@@ -47,7 +47,7 @@ public:
     LocalFrame* frame() const { return lifecycleContext(); }
 
 protected:
-    explicit FrameDestructionObserver(LocalFrame* frame)
+    explicit LocalFrameLifecycleObserver(LocalFrame* frame)
         : LifecycleObserver(frame)
     {
     }
@@ -55,4 +55,4 @@ protected:
 
 } // namespace blink
 
-#endif // FrameDestructionObserver_h
+#endif // LocalFrameLifecycleObserver_h