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SkiaRenderer renders washed out colors when using PQ color space with a
RGB10A2 surface.  This happens in M81 because the default color space
and buffer format for HDR was changed to PQ and RGB10A2 on Windows.

The root cause is that the default PQ SkColorSpace uses normalized
luminance values whereas Chrome needs to output scaled values based on
the white point.  The fix is to construct a PQish SkColorSpace using the
scaling factor.

This CL includes pixel tests for HDR10 and scRGB linear.  The HDR10 test
fails before this fix.  The HDR10 test is temporarily suppressed due to
infra issues causing the test to run on different Windows versions.

Bug: 1058580, 1066979
Change-Id: I5a6b91631377a300010d045aaf44a9375d8ffa55
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2109254
Commit-Queue: Sunny Sachanandani <sunnyps@chromium.org>
Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Reviewed-by: ccameron <ccameron@chromium.org>
Reviewed-by: kylechar <kylechar@chromium.org>
Reviewed-by: Brian Osman <brianosman@google.com>
Cr-Commit-Position: refs/heads/master@{#755529}