Use const ref for LocalFrame::LocalFrameRoot and FrameTree::Top

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 137 matching lines @@
     return nullptr;
   return new PerformanceNavigationTiming(GetFrame(), info, TimeOrigin());
 }
 
 void Performance::UpdateLongTaskInstrumentation() {
   DCHECK(GetFrame());
   if (!GetFrame()->GetDocument())
     return;
 
   if (HasObserverFor(PerformanceEntry::kLongTask)) {
-    UseCounter::Count(GetFrame()->LocalFrameRoot(),
+    UseCounter::Count(&GetFrame()->LocalFrameRoot(),
                       UseCounter::kLongTaskObserver);
     GetFrame()->GetPerformanceMonitor()->Subscribe(
         PerformanceMonitor::kLongTask, kLongTaskThreshold, this);
   } else {
     GetFrame()->GetPerformanceMonitor()->UnsubscribeAll(this);
   }
 }
 
 ScriptValue Performance::toJSONForBinding(ScriptState* script_state) const {
   V8ObjectBuilder result(script_state);
@@ skipping 88 matching lines @@
         culprit_dom_window->GetFrame()->DeprecatedLocalOwner();
     AddLongTaskTiming(
         start_time, end_time, attribution.first,
         GetFrameAttribute(frame_owner, HTMLNames::srcAttr, false),
         GetFrameAttribute(frame_owner, HTMLNames::idAttr, false),
         GetFrameAttribute(frame_owner, HTMLNames::nameAttr, true));
   }
 }
 
 }  // namespace blink