DevTools: log worker thread ids on the main thread when Timeline recording is enabled

Source/core/workers/WorkerThread.h

 /*
  * Copyright (C) 2008 Apple 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 77 matching lines @@
         // going to call runDebuggerTask in a loop.
         void willEnterNestedLoop();
         void didLeaveNestedLoop();
 
         WorkerGlobalScope* workerGlobalScope() const { return m_workerGlobalScope.get(); }
         bool terminated() const { return m_terminated; }
 
         // Number of active worker threads.
         static unsigned workerThreadCount();
 
+        PlatformThreadId platformThreadId() const;
+
         void interruptAndDispatchInspectorCommands();
         void setWorkerInspectorController(WorkerInspectorController*);
 
     protected:
         WorkerThread(WorkerLoaderProxy&, WorkerReportingProxy&, PassOwnPtrWillBeRawPtr<WorkerThreadStartupData>);
 
         // Factory method for creating a new worker context for the thread.
         virtual PassRefPtrWillBeRawPtr<WorkerGlobalScope> createWorkerGlobalScope(PassOwnPtrWillBeRawPtr<WorkerThreadStartupData>) = 0;
 
         virtual void postInitialize() { }
@@ skipping 37 matching lines @@
         // WorkerThread might get deleted before it had a chance to properly
         // shut down. By deleting the WebThread first, we can guarantee that
         // no pending tasks on the thread might want to access any of the other
         // members during the WorkerThread's destruction.
         OwnPtr<blink::WebThread> m_thread;
     };
 
 } // namespace blink
 
 #endif // WorkerThread_h