Improve performance of rebaselining after TestBaselineSet change.

Improve performance of rebaselining after TestBaselineSet change.

After https://codereview.chromium.org/2765863003, performance of
webkit-patch rebaseline-cl when rebaselining many tests regressed,
and there were a couple places where it looks like the code
was repeating work unnecessarily.

BUG=702819
Review-Url: https://codereview.chromium.org/2770023003
Cr-Commit-Position: refs/heads/master@{#459191}
Committed: https://chromium.googlesource.com/chromium/src/+/a75871227d372a8b0ddd0638a075b56eff4f7380

[qyearsley, 2017-03-23 18:04:59]

qyearsley@chromium.org changed reviewers:
+ wkorman@chromium.org

[wkorman, 2017-03-23 18:28:00]

lgtm

[qyearsley, 2017-03-23 18:37:27]

The CQ bit was checked by qyearsley@chromium.org

[commit-bot: I haz the power, 2017-03-23 18:38:13]

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, 2017-03-23 20:07:10]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1490294247417930, "parent_rev":
"d3da4f0a03a09f326f9e0ddf871bb268599ffc70", "commit_rev":
"a75871227d372a8b0ddd0638a075b56eff4f7380"}

[commit-bot: I haz the power, 2017-03-23 20:07:59]

Description was changed from

==========
Improve performance of rebaselining after TestBaselineSet change.

After https://codereview.chromium.org/2765863003, performance of
webkit-patch rebaseline-cl when rebaselining many tests regressed,
and there were a couple places where it looks like the code
was repeating work unnecessarily.

BUG=702819
==========

to

==========
Improve performance of rebaselining after TestBaselineSet change.

After https://codereview.chromium.org/2765863003, performance of
webkit-patch rebaseline-cl when rebaselining many tests regressed,
and there were a couple places where it looks like the code
was repeating work unnecessarily.

BUG=702819

Review-Url: https://codereview.chromium.org/2770023003
Cr-Commit-Position: refs/heads/master@{#459191}
Committed:
https://chromium.googlesource.com/chromium/src/+/a75871227d372a8b0ddd0638a075...
==========

[commit-bot: I haz the power, 2017-03-23 20:08:00]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/a75871227d372a8b0ddd0638a075...