Change SDR white level back to default 80 nits

crrev.com/c/1646540 changed the default SDR white level to 200 nits from
previous value of 80 nits when forcing an HDR color profile via
chrome://flags.  This doesn't seem to work well on some displays, and
leads to washed out colors.

Bug: 974894
Change-Id: I900cbe8e85aaf72a2b15119379022f3ec878e5f3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1674616
Auto-Submit: Sunny Sachanandani <sunnyps@chromium.org>
Commit-Queue: Ahmed Fakhry <afakhry@chromium.org>
Reviewed-by: Ahmed Fakhry <afakhry@chromium.org>
Cr-Commit-Position: refs/heads/master@{#672166}
1 file changed