From: Markus Fritsche <mfritsche@reauktion.de>
Subject: media/gpu: skip chromeos VideoDecoderPipeline on non-ChromeOS Linux

Placeholder. The patch will be developed against the actual chromium
147.0.7727.116 source tree on chromium-builder@boltzmann once the
tarball is extracted and we can read the exact code paths in:

  - media/gpu/chromeos/video_decoder_pipeline.cc (PickDecoderOutputFormat,
    Initialize, ImageProcessor setup)
  - media/gpu/vaapi/vaapi_video_decoder.cc (ApplyResolutionChangeWithScreenSizes,
    line ~1219 where "failed Initialize()ing the frame pool" fires)

The 7Ji-style gn args (`use_v4l2_codec=true use_v4lplugin=true
use_linux_v4l2_only=true`) MAY be sufficient by themselves to route
decode through the legacy V4L2VDA path entirely, bypassing the
chromeos pipeline without source patches. First build will tell us;
this file is the placeholder for the patch we'll need if it isn't.

# Empty no-op patch. patch -p1 < this won't change anything.
diff --git a/PLACEHOLDER b/PLACEHOLDER
new file mode 100644
index 0000000..e69de29