This is a reland of 1175ecd09599194caa05ecafdc4503e940809fc9.
Original change's description:
> Make it possible to run video_quality_loopback_test in swarming.
>
> I made two changes to video_quality_loopback_test to make it possible
> to run it on swarming.
>
> 1. We need to know the path to frame_analyzer when we're generating
> the build files, and it must be already present.
> I made frame_analyzer a resource, so it's downloaded to a known path
> before generating the build files.
> 2. The .zip files for apprtc and golang are downloaded and isolated.
> The script now extracts them and installs AppRTC.
>
> Passing task:
> https://chromium-swarm.appspot.com/task?id=3b230bcc04128210
>
> Bug: chromium:755660
> Change-Id: I34090897402421d5b7e29f21fbed354551197f92
> Reviewed-on: https://webrtc-review.googlesource.com/40920
> Reviewed-by: Patrik Höglund <phoglund@webrtc.org>
> Commit-Queue: Edward Lemur <ehmaldonado@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#21716}
Bug: chromium:755660
Change-Id: Ie3ca62d64b4fe856485287b7d9d3d9e3f75dc091
Reviewed-on: https://webrtc-review.googlesource.com/42860
Reviewed-by: Patrik Höglund <phoglund@webrtc.org>
Commit-Queue: Edward Lemur <ehmaldonado@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#21733}
70ba9b453c