GitLab

When the sync section expand button is disabled, the opacity of the
section header is reduced to make it look greyed out.

This means that the sync-section header is greyed out in the following
cases:
 - the user is signed out
 - the user is in a synced-paused state

Screenshots:
https://drive.google.com/file/d/1rDwDIqinKa2gl6QGnf2WoRkF2j28JOpH/view?usp=sharing
https://drive.google.com/file/d/1IFqP5M6pSI2bSwrTNphrQBGy1bO1Hce8/view?usp=sharing

Bug: 854273
Change-Id: I29e04b19f56c7c36a2c8e00f12929327b5612742
Reviewed-on: https://chromium-review.googlesource.com/1205836Reviewed-by: Scott Chen <scottchen@chromium.org>
Commit-Queue: Thomas Tangl <tangltom@chromium.org>
Cr-Commit-Position: refs/heads/master@{#588923}