Don't create redundant ThreadData for Worker Threads

base/threading/platform_thread_win.cc

Index: base/threading/platform_thread_win.cc
diff --git a/base/threading/platform_thread_win.cc b/base/threading/platform_thread_win.cc
index d5bd9bed08e7978714d989c2a3afcf4a135bed69..8fb34076ed8e4a27fda869a52e71fef23a59a5ba 100644
--- a/base/threading/platform_thread_win.cc
+++ b/base/threading/platform_thread_win.cc
@@ -162,7 +162,7 @@ void PlatformThread::Sleep(TimeDelta duration) {
 }
 
 // static
-void PlatformThread::SetName(const std::string& name) {
+void PlatformThread::SetName(const std::string& name, bool is_worker_thread) {
   ThreadIdNameManager::GetInstance()->SetName(CurrentId(), name);
 
   // On Windows only, we don't need to tell the profiler about the "BrokerEvent"
@@ -171,7 +171,7 @@ void PlatformThread::SetName(const std::string& name) {
   // which would also (as a side effect) initialize the profiler in this unused
   // context, including setting up thread local storage, etc.  The performance
   // impact is not terrible, but there is no reason to do initialize it.
-  if (name != "BrokerEvent")
+  if (name != "BrokerEvent" && !is_worker_thread)
     tracked_objects::ThreadData::InitializeThreadContext(name);
 
   // The debugger needs to be around to catch the name in the exception.  If