media/gpu/v4l2svda: use the queue memory type when dumping memory

The V4L2 queue can inform us on its actual memory type, so use this
instead of making assumptions.

Bug: None
Test: VDA unittest passes on Minnie.

Change-Id: I697545036808645d5bd689529c5b270550885827
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1768477
Auto-Submit: Alexandre Courbot <acourbot@chromium.org>
Commit-Queue: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#690222}

media/gpu/v4l2/v4l2_slice_video_decode_accelerator.cc

@@ -2073,16 +2073,14 @@ bool V4L2SliceVideoDecodeAccelerator::OnMemoryDump(
       input_queue_->AllocatedBuffersCount();
   size_t input_queue_memory_usage = 0;
   std::string input_queue_buffers_memory_type =
-      V4L2Device::V4L2MemoryToString(V4L2_MEMORY_MMAP);
+      V4L2Device::V4L2MemoryToString(input_queue_->GetMemoryType());
   input_queue_memory_usage += input_queue_->GetMemoryUsage();
 
   // VIDEO_CAPTURE queue's memory usage.
   const size_t output_queue_buffers_count = output_buffer_map_.size();
   size_t output_queue_memory_usage = 0;
   std::string output_queue_buffers_memory_type =
-      output_mode_ == Config::OutputMode::ALLOCATE
-          ? V4L2Device::V4L2MemoryToString(V4L2_MEMORY_MMAP)
-          : V4L2Device::V4L2MemoryToString(V4L2_MEMORY_DMABUF);
+      V4L2Device::V4L2MemoryToString(output_queue_->GetMemoryType());
   if (output_mode_ == Config::OutputMode::ALLOCATE) {
     // Call QUERY_BUF here because the length of buffers on VIDIOC_CATURE queue
     // are not recorded nowhere in V4L2VideoDecodeAccelerator.