NOT FOR SUBMISSION: local copy of leon.han's CL

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..c28fa68d1d130bb9628be3f6decd76a10e2e22d9 100644
--- a/third_party/WebKit/Source/core/workers/WorkerThread.h
+++ b/third_party/WebKit/Source/core/workers/WorkerThread.h
@@ -160,6 +160,10 @@ class CORE_EXPORT WorkerThread : public WebThread::TaskObserver {
 
   int getWorkerThreadId() const { return m_workerThreadId; }
 
+  // Returns a set of all worker threads. This must be called only on the main
+  // thread and the returned set must not be stored for future use.
+  static HashSet<WorkerThread*>& workerThreads();
+
   PlatformThreadId platformThreadId();
 
   bool isForciblyTerminated();