Contacts Picker: Add test for Select All function.

TBR: twellington
Bug: 860467
Change-Id: I7e8b0f0391befdab1e68fd52eaab6a4480f9882a
Reviewed-on: https://chromium-review.googlesource.com/c/1264795
Reviewed-by: Finnur Thorarinsson <finnur@chromium.org>
Commit-Queue: Finnur Thorarinsson <finnur@chromium.org>
Cr-Commit-Position: refs/heads/master@{#597128}
4 files changed