Revert of [Mojo Video Capture] Add test coverage for accelerated jpeg decoding

media/capture/video/video_capture_device_client.cc

Index: media/capture/video/video_capture_device_client.cc
diff --git a/media/capture/video/video_capture_device_client.cc b/media/capture/video/video_capture_device_client.cc
index 8d95f3da6f05cfdd3992be1dbeb2da8bcb5faba1..729c02edc9ed76e7da9eb4f91f5074c86123f2f9 100644
--- a/media/capture/video/video_capture_device_client.cc
+++ b/media/capture/video/video_capture_device_client.cc
@@ -104,11 +104,7 @@
       jpeg_decoder_factory_callback_(jpeg_decoder_factory),
       external_jpeg_decoder_initialized_(false),
       buffer_pool_(std::move(buffer_pool)),
-      last_captured_pixel_format_(media::PIXEL_FORMAT_UNKNOWN) {
-  on_started_using_gpu_cb_ =
-      base::Bind(&VideoFrameReceiver::OnStartedUsingGpuDecode,
-                 base::Unretained(receiver_.get()));
-}
+      last_captured_pixel_format_(media::PIXEL_FORMAT_UNKNOWN) {}
 
 VideoCaptureDeviceClient::~VideoCaptureDeviceClient() {
   // This should be on the platform auxiliary thread since
@@ -285,8 +281,6 @@
     } else if (status == VideoCaptureJpegDecoder::INIT_PASSED &&
                format.pixel_format == media::PIXEL_FORMAT_MJPEG &&
                rotation == 0 && !flip) {
-      if (on_started_using_gpu_cb_)
-        std::move(on_started_using_gpu_cb_).Run();
       external_jpeg_decoder_->DecodeCapturedData(
           data, length, format, reference_time, timestamp, std::move(buffer));
       return;
@@ -342,8 +336,9 @@
 
   if (!base::ContainsValue(buffer_ids_known_by_receiver_, buffer_id)) {
     receiver_->OnNewBufferHandle(
-        buffer_id, base::MakeUnique<BufferPoolBufferHandleProvider>(
-                       buffer_pool_, buffer_id));
+        buffer_id,
+        base::MakeUnique<BufferPoolBufferHandleProvider>(buffer_pool_,
+                                                         buffer_id));
     buffer_ids_known_by_receiver_.push_back(buffer_id);
   }