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Fixes the tests broken by enabling the refresh location bar, introducing
helpers as necessary.

Bug: 834345, 821821
Cq-Include-Trybots: luci.chromium.try:ios-simulator-full-configs;master.tryserver.chromium.mac:ios-simulator-cronet
Change-Id: Ifb767a192c3f4d3f35bf4714768352a83d4a1d99
Reviewed-on: https://chromium-review.googlesource.com/1070147
Commit-Queue: Stepan Khapugin <stkhapugin@chromium.org>
Reviewed-by: Rohit Rao <rohitrao@chromium.org>
Cr-Commit-Position: refs/heads/master@{#565664}