Navi: Prevent double recording of 'continue' on multiple clicks.

Bug: 933895
Change-Id: I67b6b4882ce465d5204e8230c34f483c35e0fa9e
Reviewed-on: https://chromium-review.googlesource.com/c/1478302
Commit-Queue: Hector Carmona <hcarmona@chromium.org>
Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Cr-Commit-Position: refs/heads/master@{#634060}
5 files changed