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

runtime/vm/message_handler_test.cc

Index: runtime/vm/message_handler_test.cc
diff --git a/runtime/vm/message_handler_test.cc b/runtime/vm/message_handler_test.cc
index ae7edab83da10bad5e7193caf4af248edf392680..314eb7c275c5b6f07f0b68b3f77b99905f9b77e7 100644
--- a/runtime/vm/message_handler_test.cc
+++ b/runtime/vm/message_handler_test.cc
@@ -399,7 +399,7 @@ UNIT_TEST_CASE(MessageHandler_Run) {
   info.handler = &handler;
   info.ports = ports;
   info.count = 10;
-  OSThread::Start(SendMessages, reinterpret_cast<uword>(&info));
+  OSThread::Start("SendMessages", SendMessages, reinterpret_cast<uword>(&info));
   while (sleep < kMaxSleep && handler.message_count() < 11) {
     OS::Sleep(10);
     sleep += 10;