Add full SetThreadPriority support to Windows.

base/threading/platform_thread_mac.mm

 // 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 "base/threading/platform_thread.h"
 
 #import <Foundation/Foundation.h>
 #include <mach/mach.h>
 #include <mach/mach_time.h>
 #include <mach/thread_policy.h>
@@ skipping 155 matching lines @@
       break;
     case kThreadPriority_RealtimeAudio:
       SetPriorityRealtimeAudio(mach_thread_id);
       break;
     default:
       NOTREACHED() << "Unknown priority.";
       break;
   }
 }
 
+// static
+ThreadPriority PlatformThread::GetThreadPriority(PlatformThreadHandle handle) {
+  NOTIMPLEMENTED();
+  return kThreadPriority_Normal;
+}
+
 size_t GetDefaultThreadStackSize(const pthread_attr_t& attributes) {
 #if defined(OS_IOS)
   return 0;
 #else
   // The Mac OS X default for a pthread stack size is 512kB.
   // Libc-594.1.4/pthreads/pthread.c's pthread_attr_init uses
   // DEFAULT_STACK_SIZE for this purpose.
   //
   // 512kB isn't quite generous enough for some deeply recursive threads that
   // otherwise request the default stack size by specifying 0. Here, adopt
@@ skipping 22 matching lines @@
 #endif
 }
 
 void InitOnThread() {
 }
 
 void TerminateOnThread() {
 }
 
 }  // namespace base