gpu: Add SequenceId for identifying sync point sequences.

media/gpu/ipc/service/gpu_video_encode_accelerator.cc

Index: media/gpu/ipc/service/gpu_video_encode_accelerator.cc
diff --git a/media/gpu/ipc/service/gpu_video_encode_accelerator.cc b/media/gpu/ipc/service/gpu_video_encode_accelerator.cc
index eac1572efc1cfafdc15a99830a8352d3af64d6fb..533e2cd95de4ed3640239454d8f7c89de8e65849 100644
--- a/media/gpu/ipc/service/gpu_video_encode_accelerator.cc
+++ b/media/gpu/ipc/service/gpu_video_encode_accelerator.cc
@@ -203,7 +203,7 @@ bool GpuVideoEncodeAccelerator::Initialize(VideoPixelFormat input_format,
            << ", initial_bitrate=" << initial_bitrate;
   DCHECK(!encoder_);
 
-  if (!stub_->channel()->AddRoute(host_route_id_, stub_->stream_id(), this)) {
+  if (!stub_->channel()->AddRoute(host_route_id_, stub_->sequence_id(), this)) {
     DLOG(ERROR) << __func__ << " failed to add route";
     return false;
   }