GitLab

The DictationButtonTray is updating its visibility in the constructor, which
causes a crash now that we have more complicated visibility logic. Instead move
the visibility update to the Initialize() function.

TEST=manually verified on device
BUG=1036052

Change-Id: I887a47ac2a655994b99d438df1b644d8fe75fd98
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1976857Reviewed-by: Tetsui Ohkubo <tetsui@chromium.org>
Commit-Queue: Tim Song <tengs@chromium.org>
Cr-Commit-Position: refs/heads/master@{#726967}