This is a reland of 2d0880b56954f57548deea51dfa678b80dbf618f To fix perf bot issue reading of perf results file was updated. Now perf results file will be generated by each test and then returned via output to the python script, which will get it and put into final file. Original change's description: > Fix collection of audio metrics from PC test framework for audio test > > Bug: webrtc:10138 > Change-Id: I18a8509a0cdc4ed1db6894c7540d5c0a155d6233 > Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/144784 > Reviewed-by: Oleh Prypin <oprypin@webrtc.org> > Reviewed-by: Oskar Sundbom <ossu@webrtc.org> > Commit-Queue: Artem Titov <titovartem@webrtc.org> > Cr-Commit-Position: refs/heads/master@{#28514} Bug: webrtc:10138 Change-Id: I1347f09427736362a2d550612b48e09c06cfb1d1 No-Presubmit: True Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/145201 Commit-Queue: Artem Titov <titovartem@webrtc.org> Reviewed-by: Oskar Sundbom <ossu@webrtc.org> Reviewed-by: Oleh Prypin <oprypin@webrtc.org> Cr-Commit-Position: refs/heads/master@{#28527}