[Chrome Colors] Use only one flag for Chrome colors.

Use only one flag for Chrome colors instead of 3 separate flags for RGB
value.

Bug: 930206
Change-Id: I2d917d51941176c14cd7d2313344d1bbcbc7abe8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1532371
Reviewed-by: Gayane Petrosyan <gayane@chromium.org>
Reviewed-by: Peter Kasting <pkasting@chromium.org>
Commit-Queue: Gayane Petrosyan <gayane@chromium.org>
Cr-Commit-Position: refs/heads/master@{#642751}
3 files changed