cookie-store: add tests for cross-origin

Ensure cookieStore changes propogate across origins

Bug: 729800
Change-Id: Ife37521a548fc35711e5925621ea27ca44036559
Reviewed-on: https://chromium-review.googlesource.com/1212147
Commit-Queue: Jarryd Goodman <jarrydg@google.com>
Reviewed-by: Victor Costan <pwnall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#590847}
4 files changed