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MessageUtils resets the accessibility utils to null when one of the
activities is destroyed, which causes the crash when another activity
is about to show a message.

This CL removes static message utils and passes in the a11y util
directly to the classes which need a11y info.

Bug: 1167098
Change-Id: I5404f35ec173ab25334e8108a27b4886f1bb9478
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2634122Reviewed-by: Theresa  <twellington@chromium.org>
Reviewed-by: Pavel Yatsuk <pavely@chromium.org>
Commit-Queue: Lijin Shen <lazzzis@google.com>
Cr-Commit-Position: refs/heads/master@{#844307}