GitLab

This change refactors the captured sites automation framework code out
of autofill_captured_sites_interactive_uitest. By completing this
refactor, other Chrome teams can leverage the captures sites
automation framework to test their team's features on real-world sites.

Also included in this change are a few minor fixes:
1. Fixed the captured sites autofill test to work with EventWaiters.
2. Modified a few test recipe files to address test breaks caused by
removing the client name parameter from autofill server queries.

Bug: 866152
Change-Id: Iee47cee8bd038ce0920caf6d63440c90c94b6285
Reviewed-on: https://chromium-review.googlesource.com/1147512
Commit-Queue: Yiming Zhou <uwyiming@google.com>
Reviewed-by: Sebastien Seguin-Gagnon <sebsg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#580278}