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This reverts commit 6d262811.

Reason for revert: https://crbug.com/1168057

Original change's description:
> CCA enables multiple streams
>
> Chrome camera app enables multiple streams while recording.
>
>       also pass type checking
>
> Bug: b:151047537
> Test: Manually test. preview is 640x360 and recording is 1280x720.
> Change-Id: I8171b0061a94ca8653c044857da2598eece43e5f
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2409683
> Commit-Queue: Heng-ruey Hsu <henryhsu@chromium.org>
> Auto-Submit: Heng-ruey Hsu <henryhsu@chromium.org>
> Reviewed-by: Inker Kuo <inker@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#844700}

TBR=jcliang@chromium.org,shik@chromium.org,henryhsu@chromium.org,inker@chromium.org,wtlee@chromium.org,chromium-scoped@luci-project-accounts.iam.gserviceaccount.com

Change-Id: I6fd3a938699b0a57f95554bd620e0dd5f4e9f6db
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: b:151047537
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2637100Reviewed-by: Shik Chen <shik@chromium.org>
Commit-Queue: Shik Chen <shik@chromium.org>
Cr-Commit-Position: refs/heads/master@{#844724}