GitLab

A search text change should reset the selected index to the first
element of the list, if such an item exists, while a open tabs change
should retain the current selected index, if it exists.

Bug: 1099917
Change-Id: I07997c15dff33e7b5e62ab752cd3007f49199dcd
Reviewed-on: https://chrome-internal-review.googlesource.com/c/chrome/browser/resources/tab_search/+/3209263Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Reviewed-by: Tom Lukaszewicz <tluk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#819586}