Revert of Plumb decoded video pixel format from GPU process to renderer.

media/gpu/v4l2_slice_video_decode_accelerator.cc

Index: media/gpu/v4l2_slice_video_decode_accelerator.cc
diff --git a/media/gpu/v4l2_slice_video_decode_accelerator.cc b/media/gpu/v4l2_slice_video_decode_accelerator.cc
index 22a48dfeced8e39b2fe552b6be3946491593f30e..d27a3b1eeb5539c37b4b1b064800dafd4a2f1bfb 100644
--- a/media/gpu/v4l2_slice_video_decode_accelerator.cc
+++ b/media/gpu/v4l2_slice_video_decode_accelerator.cc
@@ -755,13 +755,10 @@
             << ", visible size=" << visible_size_.ToString()
             << ", coded size=" << coded_size_.ToString();
 
-  VideoPixelFormat pixel_format =
-      V4L2Device::V4L2PixFmtToVideoPixelFormat(output_format_fourcc_);
-
   child_task_runner_->PostTask(
       FROM_HERE,
       base::Bind(&VideoDecodeAccelerator::Client::ProvidePictureBuffers,
-                 client_, num_pictures, pixel_format, 1, coded_size_,
+                 client_, num_pictures, 1, coded_size_,
                  device_->GetTextureTarget()));
 
   // Go into kAwaitingPictureBuffers to prevent us from doing any more decoding
@@ -2794,6 +2791,11 @@
   return true;
 }
 
+media::VideoPixelFormat V4L2SliceVideoDecodeAccelerator::GetOutputFormat()
+    const {
+  return V4L2Device::V4L2PixFmtToVideoPixelFormat(output_format_fourcc_);
+}
+
 // static
 media::VideoDecodeAccelerator::SupportedProfiles
 V4L2SliceVideoDecodeAccelerator::GetSupportedProfiles() {