Refactor trace_integration_test.

Put a bunch of hard wired params through test args so more testing using
tracing mechanism can be added.

This is the necessary step allowing us to reuse this harness for video frame
presentation mode testing.

BUG=867136
TEST=GPU bots, trace_test
R=piman@chromium.org,kbr@chromium.org

Change-Id: I00b30e4273570c2ba05ab8af1bc1ebe2c596e5a8
Reviewed-on: https://chromium-review.googlesource.com/c/1428405
Commit-Queue: Zhenyao Mo <zmo@chromium.org>
Reviewed-by: Antoine Labour <piman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#625064}
2 files changed