[iOS][Translate] Moves LanguageSelectionCoordinator to InfobarCoordinator

Bug: 910994
Change-Id: I7f59a65fed447d2ffb960fbc901f92ea35c84c35
Reviewed-on: https://chromium-review.googlesource.com/c/1340533
Commit-Queue: Moe Ahmadi <mahmadi@chromium.org>
Reviewed-by: Sergio Collazos <sczs@chromium.org>
Reviewed-by: Rohit Rao <rohitrao@chromium.org>
Reviewed-by: edchin <edchin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#613749}
10 files changed