Add a missing DCHECK to PlatformThread::SetPriority.

webrtc/base/platform_thread.cc

 /*
  *  Copyright (c) 2015 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 261 matching lines @@
 #endif
   } while (!AtomicOps::AcquireLoad(&stop_flag_));
 #endif  // defined(WEBRTC_WIN)
 }
 
 bool PlatformThread::SetPriority(ThreadPriority priority) {
 #if RTC_DCHECK_IS_ON
   if (run_function_) {
     // The non-deprecated way of how this function gets called, is that it must
     // be called on the worker thread itself.
+    RTC_DCHECK(!thread_checker_.CalledOnValidThread());
     RTC_DCHECK(spawned_thread_checker_.CalledOnValidThread());
   } else {
     // In the case of deprecated use of this method, it must be called on the
     // same thread as the PlatformThread object is constructed on.
     RTC_DCHECK(thread_checker_.CalledOnValidThread());
     RTC_DCHECK(IsRunning());
   }
 #endif
 
 #if defined(WEBRTC_WIN)
@@ skipping 50 matching lines @@
 #if defined(WEBRTC_WIN)
 bool PlatformThread::QueueAPC(PAPCFUNC function, ULONG_PTR data) {
   RTC_DCHECK(thread_checker_.CalledOnValidThread());
   RTC_DCHECK(IsRunning());
 
   return QueueUserAPC(function, thread_, data) != FALSE;
 }
 #endif
 
 }  // namespace rtc