Ui2Locators for Page Controllers.

Bug: 924194
Change-Id: I7cf3075dc2dda96206161b052ba9494643951839
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1492367
Commit-Queue: Andrew Luo <aluo@chromium.org>
Reviewed-by: John Budorick <jbudorick@chromium.org>
Reviewed-by: Sky Malice <skym@chromium.org>
Reviewed-by: Brian Sheedy <bsheedy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#657324}
9 files changed