- Add an OSThread structure which is the generic TLS structure for all C++

runtime/vm/thread_pool.cc

Index: runtime/vm/thread_pool.cc
diff --git a/runtime/vm/thread_pool.cc b/runtime/vm/thread_pool.cc
index d5472a661001541f0d95bb3d2474b173ef3e7d0d..ca2e4bf478a83d1645ee5184826a3e31d4dde029 100644
--- a/runtime/vm/thread_pool.cc
+++ b/runtime/vm/thread_pool.cc
@@ -333,7 +333,9 @@ void ThreadPool::Worker::StartThread() {
     ASSERT(task_ != NULL);
   }
 #endif
-  int result = OSThread::Start(&Worker::Main, reinterpret_cast<uword>(this));
+  int result = OSThread::Start("Dart ThreadPool Worker",
+                               &Worker::Main,
+                               reinterpret_cast<uword>(this));
   if (result != 0) {
     FATAL1("Could not start worker thread: result = %d.", result);
   }
@@ -417,9 +419,6 @@ void ThreadPool::Worker::Shutdown() {
 
 // static
 void ThreadPool::Worker::Main(uword args) {
-  Thread::EnsureInit();
-  Thread* thread = Thread::Current();
-  thread->set_name("Dart ThreadPool Worker");
   Worker* worker = reinterpret_cast<Worker*>(args);
   ThreadId id = OSThread::GetCurrentThreadId();
   ThreadJoinId join_id = OSThread::GetCurrentThreadJoinId();