Clean up forward declarations in Source/core/inspector

Source/core/inspector/InspectorProfilerAgent.h

 /*
  * Copyright (C) 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 26 matching lines @@
 #include "wtf/Noncopyable.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class ExecutionContext;
 class InjectedScriptManager;
 class InspectorFrontend;
 class InspectorOverlay;
-class InstrumentingAgents;
-class ScriptState;
-class ScriptCallStack;
-class ScriptProfile;
 
 
 typedef String ErrorString;
 
 class InspectorProfilerAgent final : public InspectorBaseAgent<InspectorProfilerAgent>, public InspectorBackendDispatcher::ProfilerCommandHandler {
     WTF_MAKE_NONCOPYABLE(InspectorProfilerAgent);
     WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
 public:
     static PassOwnPtrWillBeRawPtr<InspectorProfilerAgent> create(InjectedScriptManager*, InspectorOverlay*);
     virtual ~InspectorProfilerAgent();
@@ skipping 37 matching lines @@
     InspectorOverlay* m_overlay;
 
     void idleStarted();
     void idleFinished();
 };
 
 } // namespace blink
 
 
 #endif // !defined(InspectorProfilerAgent_h)