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When DICE is enabled and there is a sync error, the user menu should
show a red field containing the profile photo, an action title and a
short overview of the error. This field should be clickable and
replace the current action button.

Mocks can be found in the bug report.

Additional changes:
 - The spacing in the HoverButton class for the badged
   profile photo is corrected.

Bug: 786369
Change-Id: I3165100d16dd75a57e5381edddfb56ae37668bbf
Reviewed-on: https://chromium-review.googlesource.com/781692Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: Trent Apted <tapted@chromium.org>
Commit-Queue: Thomas Tangl <tangltom@chromium.org>
Cr-Commit-Position: refs/heads/master@{#521656}