Make DOMWindowProperty a thin wrapper of ContextLifecycleObserver

third_party/WebKit/Source/core/timing/Performance.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2012 Intel Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 89 matching lines @@
 }
 
 Performance::Performance(LocalFrame* frame)
     : PerformanceBase(toTimeOrigin(frame)), DOMWindowProperty(frame) {}
 
 Performance::~Performance() {
   if (frame())
     frame()->performanceMonitor()->unsubscribeAll(this);
 }
 
-void Performance::frameDestroyed() {
+void Performance::contextDestroyed() {
   frame()->performanceMonitor()->unsubscribeAll(this);
-  DOMWindowProperty::frameDestroyed();
+  DOMWindowProperty::contextDestroyed();
 }
 
 ExecutionContext* Performance::getExecutionContext() const {
   if (!frame())
     return nullptr;
   return frame()->document();
 }
 
 MemoryInfo* Performance::memory() {
   return MemoryInfo::create();
@@ skipping 117 matching lines @@
     HTMLFrameOwnerElement* frameOwner =
         culpritDomWindow->document()->localOwner();
     addLongTaskTiming(startTime, endTime, attribution.first,
                       getFrameAttribute(frameOwner, HTMLNames::srcAttr, false),
                       getFrameAttribute(frameOwner, HTMLNames::idAttr, false),
                       getFrameAttribute(frameOwner, HTMLNames::nameAttr, true));
   }
 }
 
 }  // namespace blink