Don't create redundant ThreadData for Worker Threads

base/threading/platform_thread.h

Index: base/threading/platform_thread.h
diff --git a/base/threading/platform_thread.h b/base/threading/platform_thread.h
index 72da93bf56d4fc984c35c5f49ef2a69fd475be00..60b871e5835c5aee91db13ae54d5d6297fdc6d1d 100644
--- a/base/threading/platform_thread.h
+++ b/base/threading/platform_thread.h
@@ -142,9 +142,9 @@ class BASE_EXPORT PlatformThread {
   // Sleeps for the specified duration.
   static void Sleep(base::TimeDelta duration);
 
-  // Sets the thread name visible to debuggers/tools. This has no effect
-  // otherwise.
-  static void SetName(const std::string& name);
+  // Sets the thread name visible to debuggers/tools. This will try to
+  // initialize the context for current thread unless it's a WorkerThread.
+  static void SetName(const std::string& name, bool is_worker_thread = false);
 
   // Gets the thread name, if previously set by SetName.
   static const char* GetName();