GitLab

The tab metadata (color and title) is only restored if the tab is the
only one in the group or else the current metadata will be unchanged.

Bug: 979274
Change-Id: I0c03a1d6fb6286ffda7144caea559a6cc37ebc04
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1873503Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: Connie Wan <connily@chromium.org>
Reviewed-by: Collin Baker <collinbaker@chromium.org>
Commit-Queue: Charlene Yan <cyan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#723662}