blink: Cleanup core class forward declarations

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

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef InspectorWebPerfAgent_h
 #define InspectorWebPerfAgent_h
 
 #include "core/CoreExport.h"
 #include "platform/heap/Handle.h"
 #include "public/platform/WebThread.h"
 #include "public/platform/scheduler/base/task_time_observer.h"
 
 namespace blink {
 
 class DOMWindow;
 class ExecutionContext;
 class Frame;
 class LocalFrame;
 class Location;
-class InspectedFrames;
 
 // Inspector Agent for Web Performance APIs
 class CORE_EXPORT InspectorWebPerfAgent final
     : public GarbageCollectedFinalized<InspectorWebPerfAgent>,
       public WebThread::TaskObserver,
       public scheduler::TaskTimeObserver {
   WTF_MAKE_NONCOPYABLE(InspectorWebPerfAgent);
   friend class InspectorWebPerfAgentTest;
 
  public:
@@ skipping 22 matching lines @@
       const HeapHashSet<Member<Location>>& frameContextLocations,
       Frame* observerFrame);
 
   Member<LocalFrame> m_localFrame;
   HeapHashSet<Member<Location>> m_frameContextLocations;
 };
 
 }  // namespace blink
 
 #endif  // InspectorWebPerfAgent_h