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The TabUpdated() API will be called from
from TabStripModelObserver.TabChangedAt()
It will send out UpdateTabInfo for the updated tab
so no more additional API calls are needed.

Related CL:
https://chrome-internal-review.googlesource.com/c/chrome/browser/resources/tab_search/+/3217588

Bug: 1099917
Change-Id: Id46b18827a8ef4f3c02d5a992ef4a3cc8ae2f6f7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2357958Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Reviewed-by: Thomas Lukaszewicz <tluk@chromium.org>
Reviewed-by: John Lee <johntlee@chromium.org>
Commit-Queue: Yuheng Huang <yuhengh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#800399}