Fix potential race-condition _beginthread

ppapi/tests/test_case.cc

 // 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.
 
 #include "ppapi/tests/test_case.h"
 
 #include <string.h>
 
 #include <algorithm>
 #include <sstream>
@@ skipping 233 matching lines @@
 void TestCase::DoQuitMainMessageLoop(void* pp_instance, int32_t result) {
   PP_Instance* instance = static_cast<PP_Instance*>(pp_instance);
   GetTestingInterface()->QuitMessageLoop(*instance);
   delete instance;
 }
 
 void TestCase::RunOnThreadInternal(
     void (*thread_func)(void*),
     void* thread_param,
     const PPB_Testing_Private* testing_interface) {
-  PP_ThreadType thread;
+  PP_Thread thread;
   PP_CreateThread(&thread, thread_func, thread_param);
   // Run a message loop so pepper calls can be dispatched. The background
   // thread will set result_ and make us Quit when it's done.
   testing_interface->RunMessageLoop(instance_->pp_instance());
   PP_JoinThread(thread);
 }