blink: Cleanup class/struct forward declarations

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

 /*
  * Copyright (C) 2011 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 26 matching lines @@
 #include "core/inspector/InspectorDOMAgent.h"
 #include "core/inspector/protocol/DOMDebugger.h"
 #include "wtf/HashMap.h"
 #include "wtf/text/WTFString.h"
 
 #include <v8-inspector.h>
 
 namespace blink {
 
 class Element;
-class Event;
 class InspectorDOMAgent;
 class Node;
 
 namespace protocol {
 class DictionaryValue;
 }
 
 class CORE_EXPORT InspectorDOMDebuggerAgent final
     : public InspectorBaseAgent<protocol::DOMDebugger::Metainfo> {
   WTF_MAKE_NONCOPYABLE(InspectorDOMDebuggerAgent);
@@ skipping 74 matching lines @@
 
   v8::Isolate* m_isolate;
   Member<InspectorDOMAgent> m_domAgent;
   v8_inspector::V8InspectorSession* m_v8Session;
   HeapHashMap<Member<Node>, uint32_t> m_domBreakpoints;
 };
 
 }  // namespace blink
 
 #endif  // !defined(InspectorDOMDebuggerAgent_h)