Clean up PlatformThread.

webrtc/modules/utility/source/process_thread_impl.cc

Index: webrtc/modules/utility/source/process_thread_impl.cc
diff --git a/webrtc/modules/utility/source/process_thread_impl.cc b/webrtc/modules/utility/source/process_thread_impl.cc
index 63e77d9f55d6453b3f5cbc5e4bdef5492e4f39eb..1da4225614c03b9aad3cf8eb2c2b542bff62a61e 100644
--- a/webrtc/modules/utility/source/process_thread_impl.cc
+++ b/webrtc/modules/utility/source/process_thread_impl.cc
@@ -76,9 +76,9 @@ void ProcessThreadImpl::Start() {
       m.module->ProcessThreadAttached(this);
   }
 
-  thread_ =
-      PlatformThread::CreateThread(&ProcessThreadImpl::Run, this, thread_name_);
-  RTC_CHECK(thread_->Start());
+  thread_.reset(
+      new rtc::PlatformThread(&ProcessThreadImpl::Run, this, thread_name_));
+  thread_->Start();
 }
 
 void ProcessThreadImpl::Stop() {
@@ -93,7 +93,7 @@ void ProcessThreadImpl::Stop() {
 
   wake_up_->Set();
 
-  RTC_CHECK(thread_->Stop());
+  thread_->Stop();
   stop_ = false;
 
   // TODO(tommi): Since DeRegisterModule is currently being called from