blink: Cleanup core class forward declarations

third_party/WebKit/Source/core/dom/ExecutionContext.h

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  * Copyright (C) 2012 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.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 37 matching lines @@
 class ActiveDOMObject;
 class ConsoleMessage;
 class DOMTimerCoordinator;
 class ErrorEvent;
 class EventQueue;
 class EventTarget;
 class ExecutionContextTask;
 class LocalDOMWindow;
 class PublicURLManager;
 class SecurityOrigin;
-class SourceLocation;
 
 class CORE_EXPORT ExecutionContext : public ContextLifecycleNotifier,
                                      public Supplementable<ExecutionContext> {
   WTF_MAKE_NONCOPYABLE(ExecutionContext);
 
  public:
   DECLARE_VIRTUAL_TRACE();
 
   // Used to specify whether |isSecureContext| should walk the
   // ancestor tree to decide whether to restrict usage of a powerful
@@ skipping 140 matching lines @@
 
   Deque<std::unique_ptr<SuspendableTask>> m_suspendedTasks;
   bool m_isRunSuspendableTasksScheduled;
 
   ReferrerPolicy m_referrerPolicy;
 };
 
 }  // namespace blink
 
 #endif  // ExecutionContext_h