GitLab

Doc:
https://docs.google.com/document/d/1-1ijT7wt05hlBZmSKjX_DaTCzVqpxbfTM1y-j7kYHlc
Usage:
tools/perf/run_benchmark run UNSCHEDULED_tab_search --browser-executable=out/Default/chrome --story-filter=tab_search:top10:2020
tools/perf/run_benchmark run UNSCHEDULED_tab_search --browser-executable=out/Default/chrome --story-filter=tab_search:top50:2020
tools/perf/run_benchmark run UNSCHEDULED_tab_search --browser-executable=out/Default/chrome --story-filter=tab_search:top100:2020

Change-Id: I684024f9cf3264ac2ed4feca15c6059342a493c2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2461224
Commit-Queue: Yuheng Huang <yuhengh@chromium.org>
Reviewed-by: John Chen <johnchen@chromium.org>
Reviewed-by: Thomas Lukaszewicz <tluk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#824599}