Replace InspectedFrames::root with pointer to directly stored LocalFrame

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 68 matching lines @@
 
 PerformanceTiming* Performance::timing() const {
   if (!m_timing)
     m_timing = PerformanceTiming::create(frame());
 
   return m_timing.get();
 }
 
 void Performance::updateLongTaskInstrumentation() {
   if (hasObserverFor(PerformanceEntry::LongTask) && !m_longTaskInspectorAgent) {
-    m_longTaskInspectorAgent =
-        new InspectorWebPerfAgent(InspectedFrames::create(frame()));
+    m_longTaskInspectorAgent = new InspectorWebPerfAgent(frame());
     m_longTaskInspectorAgent->enable();
   } else if (!hasObserverFor(PerformanceEntry::LongTask) &&
              m_longTaskInspectorAgent) {
     m_longTaskInspectorAgent->disable();
     m_longTaskInspectorAgent = nullptr;
   }
 }
 
 DEFINE_TRACE(Performance) {
   visitor->trace(m_navigation);
   visitor->trace(m_timing);
   visitor->trace(m_longTaskInspectorAgent);
   DOMWindowProperty::trace(visitor);
   PerformanceBase::trace(visitor);
 }
 
 }  // namespace blink