Revert "[Mojo Video Capture] Enable service in default testing config"

This reverts commit 448205768fae167eb3aba324911b4c04c3fda5f3.

Reason for revert: This seems to break WebRtcApprtcBrowserTest.MANUAL_WorksOnApprtc test. The failure is consistent on Win bots and very likely on Mac bots:
https://build.chromium.org/p/chromium.webrtc/builders/Win8%20Tester/builds/35214
https://build.chromium.org/p/chromium.webrtc/waterfall?builder=Mac%20Tester

Original change's description:
> [Mojo Video Capture] Enable service in default testing config
> 
> This CL is part of the Mojo Video Capture work.
> Design doc for dev work [1].
> Design doc for launch [2].
> 
> BUG:584797,721812
> 
> [1] https://docs.google.com/a/chromium.org/document/d/1Qw7rw1AJy0QHXjha36jZNiEuxsxWslJ_X-zpOhijvI8/edit?usp=sharing
> [2] https://docs.google.com/document/d/1RLlgEdvqRA_NQfSPMJLn5KR-ygVzZ2MRgIy9yd6CdFA/edit?usp=sharing
> 
> Change-Id: I38b83efdf1e8619e3edba95df70a6b5fdae30a3f
> Reviewed-on: https://chromium-review.googlesource.com/524298
> Reviewed-by: Jesse Doherty <jwd@chromium.org>
> Commit-Queue: Christian Fremerey <chfremer@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#481767}

TBR=jwd@chromium.org,chfremer@chromium.org

Change-Id: Ife2bf7fc75a09528de04e08b5f8e4d4e7f94660c
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/546276
Reviewed-by: Emircan Uysaler <emircan@chromium.org>
Commit-Queue: Emircan Uysaler <emircan@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#481930}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: e2c45c3a4729e18e7cfa700f3d32d7db06c4ef2c
1 file changed