Revert "[Video Capture Service] Add tests cases for mixing single client and multi client APIs"

This reverts commit 07927033a8fe3ae7b492bdc598acd1d04353175c.

Reason for revert:

Findit (https://goo.gl/kROfz5) identified CL at revision 652964 as the
culprit for flakes in the build cycles as shown on:
https://analysis.chromium.org/p/chromium/flake-portal/analysis/culprit?key=ag9zfmZpbmRpdC1mb3ItbWVyQwsSDEZsYWtlQ3VscHJpdCIxY2hyb21pdW0vMDc5MjcwMzNhOGZlM2FlN2I0OTJiZGM1OThhY2QxZDA0MzUzMTc1Yww

Sample Failed Build: https://ci.chromium.org/buildbot/chromium.linux/Cast%20Audio%20Linux/39859

Sample Failed Step: content_browsertests

Sample Flaky Test: WebRtcVideoCaptureSharedDeviceBrowserTest.ReceiveFrameInRendererWhileDeviceAlreadyInUseViaDirectServiceClient/0

Original change's description:
> [Video Capture Service] Add tests cases for mixing single client and multi client APIs
> 
> Bug: 783442
> Change-Id: I1c2c081c8647950c1e7b54f5205b51ed86d0631f
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1554882
> Commit-Queue: Christian Fremerey <chfremer@chromium.org>
> Reviewed-by: Emircan Uysaler <emircan@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#652964}

Change-Id: I1d9bc8a8d8c2afd76fa4cd2e2434c36f855e9c01
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 783442
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1578427
Cr-Commit-Position: refs/heads/master@{#653139}
1 file changed