GitLab

The test is modeled after Chrome's MediaRouterIntegrationTest. Other
test cases will be added soon.

The cast emulator service is moved from //chrome to //components. This
service (and an APK wrapping it) is necessary for the media route
chooser dialog to have entries in it. The selection of these entries
(creation of presentation, etc) is handled by MockMediaRouteProvider.

RouterTestUtils is also moved to //components/media_router. This
facilitates finding views in the chooser dialog.

Bug: 1057099
Change-Id: I0e8b67f3286b21bec5bc0f4581975fc1cca95b53
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2488088Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: mark a. foltz <mfoltz@chromium.org>
Reviewed-by: Ted Choc <tedchoc@chromium.org>
Reviewed-by: Thomas Guilbert <tguilbert@chromium.org>
Reviewed-by: Clark DuVall <cduvall@chromium.org>
Commit-Queue: Evan Stade <estade@chromium.org>
Cr-Commit-Position: refs/heads/master@{#821028}