Ensure location bar is updated for start surface state

This patch ensures that the location bar is updated after we receive
a signal that the start surface state changed. The logic previously
seems to have depended on execution order/timing of the underlying
system rather than an explicit call.

Bug: 1226985
Change-Id: I651738435cd63e23454f4e3ec8f200325d7523be
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3022540
Reviewed-by: Patrick Noland <pnoland@chromium.org>
Commit-Queue: Matt Jones <mdjones@chromium.org>
Cr-Commit-Position: refs/heads/master@{#901490}