Deprecate NonThreadSafe in content/renderer/media in favor of SequenceChecker.

content/renderer/media/pepper_to_video_track_adapter.cc

Index: content/renderer/media/pepper_to_video_track_adapter.cc
diff --git a/content/renderer/media/pepper_to_video_track_adapter.cc b/content/renderer/media/pepper_to_video_track_adapter.cc
index c8d892c30095de1f39deebb967803f9147124559..104bd010da5748c17d44dba91bd325fdf7706d7c 100644
--- a/content/renderer/media/pepper_to_video_track_adapter.cc
+++ b/content/renderer/media/pepper_to_video_track_adapter.cc
@@ -121,7 +121,7 @@ void PpFrameWriter::GetCurrentSupportedFormats(
     int max_requested_height,
     double max_requested_frame_rate,
     const VideoCaptureDeviceFormatsCB& callback) {
-  DCHECK(CalledOnValidThread());
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
   DVLOG(3) << "PpFrameWriter::GetCurrentSupportedFormats()";
   // Since the input is free to change the resolution at any point in time
   // the supported formats are unknown.
@@ -133,7 +133,7 @@ void PpFrameWriter::StartSourceImpl(
     const media::VideoCaptureFormat& format,
     const blink::WebMediaConstraints& constraints,
     const VideoCaptureDeliverFrameCB& frame_callback) {
-  DCHECK(CalledOnValidThread());
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
   DCHECK(!delegate_.get());
   DVLOG(3) << "PpFrameWriter::StartSourceImpl()";
   delegate_ = new FrameWriterDelegate(io_task_runner(), frame_callback);
@@ -141,14 +141,14 @@ void PpFrameWriter::StartSourceImpl(
 }
 
 void PpFrameWriter::StopSourceImpl() {
-  DCHECK(CalledOnValidThread());
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
 }
 
 // Note: PutFrame must copy or process image_data directly in this function,
 // because it may be overwritten as soon as we return from this function.
 void PpFrameWriter::PutFrame(PPB_ImageData_Impl* image_data,
                              int64_t time_stamp_ns) {
-  DCHECK(CalledOnValidThread());
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
   TRACE_EVENT0("video", "PpFrameWriter::PutFrame");
   DVLOG(3) << "PpFrameWriter::PutFrame()";