base: Set initial thread priority in ThreadFunc.

base/threading/platform_thread_unittest.cc

Index: base/threading/platform_thread_unittest.cc
diff --git a/base/threading/platform_thread_unittest.cc b/base/threading/platform_thread_unittest.cc
index 52f8d1ba6f31c5158fe6b49e2003c90a844da8f3..8085ce574eb8719d40f0015920d7a267b15b7de0 100644
--- a/base/threading/platform_thread_unittest.cc
+++ b/base/threading/platform_thread_unittest.cc
@@ -262,6 +262,12 @@ 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();