GitLab

Removes explicit SetShowCloseButton calls. Leaves an ability to more
explicitly override the close-x (OverrideShowCloseButton) to avoid
changing existing dialogs as they are converted.

Making all existing dialogs respect dialog modality and removing this
override is something I'll try to negotiate separately, but this can at
least be correct by default.

Bug: 1106422
Change-Id: Ib8424e5c45fadee58aa07e5a2d26bd117054ebbc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2465805
Commit-Queue: Peter Boström <pbos@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Cr-Commit-Position: refs/heads/master@{#816445}