Revert of Track frame context URL using first script heuristic

third_party/WebKit/Source/core/inspector/InspectorWebPerfAgent.h

Index: third_party/WebKit/Source/core/inspector/InspectorWebPerfAgent.h
diff --git a/third_party/WebKit/Source/core/inspector/InspectorWebPerfAgent.h b/third_party/WebKit/Source/core/inspector/InspectorWebPerfAgent.h
index 467bf8a9832f11fea567feaef9c984128d004a4b..17c31580f266a8a390531897b224ecd63ce9900b 100644
--- a/third_party/WebKit/Source/core/inspector/InspectorWebPerfAgent.h
+++ b/third_party/WebKit/Source/core/inspector/InspectorWebPerfAgent.h
@@ -14,7 +14,6 @@
 
 class ExecutionContext;
 class LocalFrame;
-class Location;
 class InspectedFrames;
 
 // Inspector Agent for Web Performance APIs
@@ -23,7 +22,6 @@
     , public WebThread::TaskObserver
     , public scheduler::TaskTimeObserver {
     WTF_MAKE_NONCOPYABLE(InspectorWebPerfAgent);
-    friend class InspectorWebPerfAgentTest;
 public:
     explicit InspectorWebPerfAgent(InspectedFrames*);
     ~InspectorWebPerfAgent();
@@ -41,7 +39,6 @@
 
 private:
     Member<InspectedFrames> m_inspectedFrames;
-    HeapHashSet<Member<Location>> m_frameContextLocations;
 };
 
 } // namespace blink