Route Dark Mode Windows Colors through GetAuraColor()

Win32 system colors currently don't support Dark Mode. As a result,
fallback on the Aura colors. Inverted color schemes can be ignored here
as it's only true when Chrome is running on a high-contrast AND when
the relative luminance of COLOR_WINDOWTEXT is greater than COLOR_WINDOW
(e.g. white on black), which is basically like dark mode.

BUG=928378

Change-Id: I71ae0c1dd13213278461c04f50ae8ae8e5599a87
Reviewed-on: https://chromium-review.googlesource.com/c/1455646
Commit-Queue: Robert Liao <robliao@chromium.org>
Auto-Submit: Robert Liao <robliao@chromium.org>
Reviewed-by: Peter Kasting <pkasting@chromium.org>
Cr-Commit-Position: refs/heads/master@{#629610}
1 file changed