[ios] Fixed bookmarks folder search animation when in root

When going from bookmarks root to another folder through search
(we replace the controller stack) the search bar was at different
height (on iOS 11), resulting in a kink in the animation. This
solves it by moving to small title before the animation.

Bug: 893559
Change-Id: I74424e25ae475ea493a967f49c89eb0d5cc96242
Reviewed-on: https://chromium-review.googlesource.com/c/1304514
Reviewed-by: Sergio Collazos <sczs@chromium.org>
Commit-Queue: David Jean <djean@chromium.org>
Cr-Commit-Position: refs/heads/master@{#605284}
1 file changed