Revert of DevTools: Make WorkerThreadDebugger available for Worklets

third_party/WebKit/Source/core/workers/WorkerThread.h

Index: third_party/WebKit/Source/core/workers/WorkerThread.h
diff --git a/third_party/WebKit/Source/core/workers/WorkerThread.h b/third_party/WebKit/Source/core/workers/WorkerThread.h
index 243672c5780447f1047ae8e72a7c4e2377afc7ba..bbd47ae68ee551bb842c78c0e912805c0fd74706 100644
--- a/third_party/WebKit/Source/core/workers/WorkerThread.h
+++ b/third_party/WebKit/Source/core/workers/WorkerThread.h
@@ -122,6 +122,7 @@
   ConsoleMessageStorage* consoleMessageStorage() const {
     return m_consoleMessageStorage.get();
   }
+  virtual bool shouldAttachThreadDebugger() const { return true; }
   v8::Isolate* isolate();
 
   bool isCurrentThread();
@@ -157,8 +158,6 @@
 
   // Number of active worker threads.
   static unsigned workerThreadCount();
-
-  int getWorkerThreadId() const { return m_workerThreadId; }
 
   PlatformThreadId platformThreadId();
 
@@ -254,9 +253,6 @@
 
   ExitCode getExitCodeForTesting();
 
-  // A unique identifier among all WorkerThreads.
-  const int m_workerThreadId;
-
   // Accessed only on the main thread.
   bool m_requestedToStart = false;