Use ParamTraits for media::BitstreamBuffer.

content/common/gpu/media/gpu_video_decode_accelerator.cc

Index: content/common/gpu/media/gpu_video_decode_accelerator.cc
diff --git a/content/common/gpu/media/gpu_video_decode_accelerator.cc b/content/common/gpu/media/gpu_video_decode_accelerator.cc
index d70b5eee80fb77ac2abbdeed01d720a9e4a102ad..682ddc3fea8f50d3f0a9c45aa6b8f9b9136eb10a 100644
--- a/content/common/gpu/media/gpu_video_decode_accelerator.cc
+++ b/content/common/gpu/media/gpu_video_decode_accelerator.cc
@@ -492,31 +492,8 @@ void GpuVideoDecodeAccelerator::OnSetCdm(int cdm_id) {
 // Runs on IO thread if video_decode_accelerator_->CanDecodeOnIOThread() is
 // true, otherwise on the main thread.
 void GpuVideoDecodeAccelerator::OnDecode(
-    const AcceleratedVideoDecoderMsg_Decode_Params& params) {
+    const media::BitstreamBuffer& bitstream_buffer) {
   DCHECK(video_decode_accelerator_);
-  if (params.bitstream_buffer_id < 0) {
-    DLOG(ERROR) << "BitstreamBuffer id " << params.bitstream_buffer_id
-                << " out of range";
-    if (child_task_runner_->BelongsToCurrentThread()) {
-      NotifyError(media::VideoDecodeAccelerator::INVALID_ARGUMENT);
-    } else {
-      child_task_runner_->PostTask(
-          FROM_HERE,
-          base::Bind(&GpuVideoDecodeAccelerator::NotifyError,
-                     base::Unretained(this),
-                     media::VideoDecodeAccelerator::INVALID_ARGUMENT));
-    }
-    return;
-  }
-
-  media::BitstreamBuffer bitstream_buffer(params.bitstream_buffer_id,
-                                          params.buffer_handle, params.size,
-                                          params.presentation_timestamp);
-  if (!params.key_id.empty()) {
-    bitstream_buffer.SetDecryptConfig(
-        media::DecryptConfig(params.key_id, params.iv, params.subsamples));
-  }
-
   video_decode_accelerator_->Decode(bitstream_buffer);
 }