GitLab

Previously it used -[NSColor drawSwatchInRect:] which "adorns" the color
with additional drawing.

Bug: 641509, 36032
Change-Id: Ib3dd089980c4d942b0aac0435a94f5ad44fcd3e4
Reviewed-on: https://chromium-review.googlesource.com/c/1343045
Commit-Queue: Robert Sesek <rsesek@chromium.org>
Reviewed-by: Avi Drissman <avi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#609759}