Clean up PlatformThread.

webrtc/system_wrappers/source/critical_section_unittest.cc

Index: webrtc/system_wrappers/source/critical_section_unittest.cc
diff --git a/webrtc/system_wrappers/source/critical_section_unittest.cc b/webrtc/system_wrappers/source/critical_section_unittest.cc
index 347cb55c91ae21013d7cce2243fd3aaf2605abb5..9abf8b8017e6ad38d93ac406a379d2c5832d6995 100644
--- a/webrtc/system_wrappers/source/critical_section_unittest.cc
+++ b/webrtc/system_wrappers/source/critical_section_unittest.cc
@@ -78,10 +78,10 @@ TEST_F(CritSectTest, ThreadWakesOnce) NO_THREAD_SAFETY_ANALYSIS {
   CriticalSectionWrapper* crit_sect =
       CriticalSectionWrapper::CreateCriticalSection();
   ProtectedCount count(crit_sect);
-  rtc::scoped_ptr<PlatformThread> thread = PlatformThread::CreateThread(
+  rtc::PlatformThread thread(
       &LockUnlockThenStopRunFunction, &count, "ThreadWakesOnce");
   crit_sect->Enter();
-  ASSERT_TRUE(thread->Start());
+  thread.Start();
   SwitchProcess();
   // The critical section is of reentrant mode, so this should not release
   // the lock, even though count.Count() locks and unlocks the critical section
@@ -90,7 +90,7 @@ TEST_F(CritSectTest, ThreadWakesOnce) NO_THREAD_SAFETY_ANALYSIS {
   ASSERT_EQ(0, count.Count());
   crit_sect->Leave();  // This frees the thread to act.
   EXPECT_TRUE(WaitForCount(1, &count));
-  EXPECT_TRUE(thread->Stop());
+  thread.Stop();
   delete crit_sect;
 }
 
@@ -105,10 +105,10 @@ TEST_F(CritSectTest, ThreadWakesTwice) NO_THREAD_SAFETY_ANALYSIS {
   CriticalSectionWrapper* crit_sect =
       CriticalSectionWrapper::CreateCriticalSection();
   ProtectedCount count(crit_sect);
-  rtc::scoped_ptr<PlatformThread> thread = PlatformThread::CreateThread(
+  rtc::PlatformThread thread(
       &LockUnlockRunFunction, &count, "ThreadWakesTwice");
   crit_sect->Enter();  // Make sure counter stays 0 until we wait for it.
-  ASSERT_TRUE(thread->Start());
+  thread.Start();
   crit_sect->Leave();
 
   // The thread is capable of grabbing the lock multiple times,
@@ -128,7 +128,7 @@ TEST_F(CritSectTest, ThreadWakesTwice) NO_THREAD_SAFETY_ANALYSIS {
 
   SwitchProcess();
   EXPECT_TRUE(WaitForCount(count_before + 1, &count));
-  EXPECT_TRUE(thread->Stop());
+  thread.Stop();
   delete crit_sect;
 }