base: Set initial thread priority in ThreadFunc.

base/threading/platform_thread_unittest.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 <stddef.h>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/platform_thread.h"
@@ skipping 244 matching lines @@
 #else
 #define MAYBE_ThreadPriorityCurrentThread ThreadPriorityCurrentThread
 #endif
 
 // Test changing a created thread's priority (which has different semantics on
 // some platforms).
 TEST(PlatformThreadTest, MAYBE_ThreadPriorityCurrentThread) {
   ThreadPriorityTestThread thread;
   PlatformThreadHandle handle;
 
+  if (IsBumpingPriorityAllowed()) {
+    // Bump the priority in order to verify that new threads are started with
+    // normal priority.
+    PlatformThread::SetCurrentThreadPriority(ThreadPriority::DISPLAY);
+  }
+
   ASSERT_FALSE(thread.IsRunning());
   ASSERT_TRUE(PlatformThread::Create(0, &thread, &handle));
   thread.WaitForTerminationReady();
   ASSERT_TRUE(thread.IsRunning());
 
   thread.MarkForTermination();
   PlatformThread::Join(handle);
   ASSERT_FALSE(thread.IsRunning());
 }
 
 }  // namespace base