blink: Cleanup class/struct forward declarations

third_party/WebKit/Source/core/inspector/WorkerThreadDebugger.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 18 matching lines @@
  */
 
 #ifndef WorkerThreadDebugger_h
 #define WorkerThreadDebugger_h
 
 #include "core/CoreExport.h"
 #include "core/inspector/ThreadDebugger.h"
 
 namespace blink {
 
-class ConsoleMessage;
 class ErrorEvent;
 class SourceLocation;
 class WorkerThread;
 
 class CORE_EXPORT WorkerThreadDebugger final : public ThreadDebugger {
   WTF_MAKE_NONCOPYABLE(WorkerThreadDebugger);
 
  public:
   explicit WorkerThreadDebugger(v8::Isolate*);
   ~WorkerThreadDebugger() override;
@@ skipping 35 matching lines @@
                          unsigned columnNumber,
                          v8_inspector::V8StackTrace*) override;
 
   int m_pausedContextGroupId;
   WTF::HashMap<int, WorkerThread*> m_workerThreads;
 };
 
 }  // namespace blink
 
 #endif  // WorkerThreadDebugger_h