Move ThreadWrapper to ProcessThread in base.

webrtc/system_wrappers/source/event_timer_posix.cc

 /*
  *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 136 matching lines @@
       created_at_.tv_sec = 0;
       timer_event_->Set();
       pthread_mutex_unlock(&mutex_);
       return true;
     }
   }
 
   // Start the timer thread
   timer_event_.reset(new EventTimerPosix());
   const char* thread_name = "WebRtc_event_timer_thread";
-  timer_thread_ = ThreadWrapper::CreateThread(Run, this, thread_name);
+  timer_thread_ = PlatformThread::CreateThread(Run, this, thread_name);
   periodic_ = periodic;
   time_ = time;
   bool started = timer_thread_->Start();
   timer_thread_->SetPriority(kRealtimePriority);
   pthread_mutex_unlock(&mutex_);
 
   return started;
 }
 
 bool EventTimerPosix::Run(void* obj) {
@@ skipping 54 matching lines @@
   }
   timer_event_.reset();
 
   // Set time to zero to force new reference time for the timer.
   memset(&created_at_, 0, sizeof(created_at_));
   count_ = 0;
   return true;
 }
 
 }  // namespace webrtc