Remove unused --save-perf-json arg.

Remove unused --save-perf-json arg from test_runner.py.

Review-Url: https://codereview.chromium.org/2886023002
Cr-Commit-Position: refs/heads/master@{#472582}
Committed: https://chromium.googlesource.com/chromium/src/+/834b125e7df0de36eda259f5fe3d49bfadfd197f

[mikecase (-- gone --), 2017-05-16 22:23:22]

mikecase@chromium.org changed reviewers:
+ jbudorick@chromium.org

[mikecase (-- gone --), 2017-05-16 22:23:22]

No idea what this is, but is used absolutely nowhere

[mikecase (-- gone --), 2017-05-16 22:23:40]

Description was changed from

==========
Remove unused --save-perf-json arg.
==========

to

==========
Remove unused --save-perf-json arg from test_runner.py.
==========

[jbudorick, 2017-05-17 17:47:48]

On 2017/05/16 22:23:22, mikecase wrote:
> No idea what this is, but is used absolutely nowhere

huh. No one is passing this in, and nothing in the test runner is using it. How
did this slip through my previous cleanup CL...

anyhow, lgtm

[mikecase (-- gone --), 2017-05-17 18:03:28]

The CQ bit was checked by mikecase@chromium.org

[commit-bot: I haz the power, 2017-05-17 18:04:59]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-05-17 21:54:19]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1495044208006850, "parent_rev":
"381186a82f9809e299ae9e3ff7bcd5ebb06ca825", "commit_rev":
"834b125e7df0de36eda259f5fe3d49bfadfd197f"}

[commit-bot: I haz the power, 2017-05-17 21:54:29]

Description was changed from

==========
Remove unused --save-perf-json arg from test_runner.py.
==========

to

==========
Remove unused --save-perf-json arg from test_runner.py.

Review-Url: https://codereview.chromium.org/2886023002
Cr-Commit-Position: refs/heads/master@{#472582}
Committed:
https://chromium.googlesource.com/chromium/src/+/834b125e7df0de36eda259f5fe3d...
==========

[commit-bot: I haz the power, 2017-05-17 21:54:32]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/834b125e7df0de36eda259f5fe3d...