GitLab

This CL effectively reverts the refactoring in
https://chromium-review.googlesource.com/c/chromium/src/+/1185218/. It
extracts the lower level decode code so that it can be used (later) to
implement a gpu::ImageDecodeAcceleratorWorker that decodes JPEGs using
the VAAPI.

A VaapiJpegDecoder class is created to contain this lower level code. In
a follow-up CL, this class is expanded to be responsible for dealing
with the VaapiWrapper and surface creation.

This opportunity is used to fix some includes and build dependencies.
Additionally, some code health fixes are done, the most significant
being getting rid of memset in the Fill*() methods.

Bug: 924310
Test: the VaapiJpegDecoderTest unit tests pass on a nocturne.
Change-Id: Idf207e9f81385611e84069e229a0e59eec2479ec
Reviewed-on: https://chromium-review.googlesource.com/c/1424401Reviewed-by: Dan Sanders <sandersd@chromium.org>
Reviewed-by: Miguel Casas <mcasas@chromium.org>
Commit-Queue: Andres Calderon Jaramillo <andrescj@chromium.org>
Cr-Commit-Position: refs/heads/master@{#626162}