Don't create redundant ThreadData for Worker Threads

base/tracked_objects.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef BASE_TRACKED_OBJECTS_H_
 #define BASE_TRACKED_OBJECTS_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 496 matching lines @@
 
   // Record the end of execution in region, generally corresponding to a scope
   // being exited.
   static void TallyRunInAScopedRegionIfTracking(const Births* births,
                                                 const TaskStopwatch& stopwatch);
 
   const std::string& thread_name() const { return thread_name_; }
 
   // Initializes all statics if needed (this initialization call should be made
   // while we are single threaded).
-  static void Initialize();
+  static void EnsureTlsInitialization();
 
   // Sets internal status_.
   // If |status| is false, then status_ is set to DEACTIVATED.
   // If |status| is true, then status_ is set to PROFILING_ACTIVE.
   static void InitializeAndSetTrackingStatus(Status status);
 
   static Status status();
 
   // Indicate if any sort of profiling is being done (i.e., we are more than
   // DEACTIVATED).
@@ skipping 283 matching lines @@
   ProcessDataSnapshot(const ProcessDataSnapshot& other);
   ~ProcessDataSnapshot();
 
   PhasedProcessDataSnapshotMap phased_snapshots;
   base::ProcessId process_id;
 };
 
 }  // namespace tracked_objects
 
 #endif  // BASE_TRACKED_OBJECTS_H_