Fix up pylint warnings in run_webkit_tests_unittest.py.

Fix up pylint warnings in run_webkit_tests_unittest.py.

In this CL:
 - remove unused arg in helper function
 - rename methods to conform to naming convention
 - add pylint disable to not warn about testing protected methods

BUG=643937
Review-Url: https://codereview.chromium.org/2715573002
Cr-Commit-Position: refs/heads/master@{#452317}
Committed: https://chromium.googlesource.com/chromium/src/+/aaa73ea0f5ac4aadf0f30e12a3e86fa3388ec1be

[qyearsley, 2017-02-22 23:14:54]

Description was changed from

==========
Fix up pylint warnings in run_webkit_tests_unittest.py.

BUG=643937
==========

to

==========
Fix up pylint warnings in run_webkit_tests_unittest.py.

In this CL:
 - remove unused arg in helper function
 - rename methods to conform to naming convention
 - add pylint disable to not warn about testing protected methods

BUG=643937
==========

[qyearsley, 2017-02-22 23:14:55]

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

[qyearsley, 2017-02-22 23:15:24]

This is another minor clean-up CL... could you check and let me know if anything
here doesn't look right? :-)

[tkent, 2017-02-22 23:23:52]

lgtm

[qyearsley, 2017-02-22 23:29:17]

The CQ bit was checked by qyearsley@chromium.org

[commit-bot: I haz the power, 2017-02-22 23:30:31]

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, 2017-02-23 00:53:41]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1487806157480340, "parent_rev":
"19b52c097bfeb38304d4243fea5eff8aeb3140c9", "commit_rev":
"aaa73ea0f5ac4aadf0f30e12a3e86fa3388ec1be"}

[commit-bot: I haz the power, 2017-02-23 00:54:19]

Description was changed from

==========
Fix up pylint warnings in run_webkit_tests_unittest.py.

In this CL:
 - remove unused arg in helper function
 - rename methods to conform to naming convention
 - add pylint disable to not warn about testing protected methods

BUG=643937
==========

to

==========
Fix up pylint warnings in run_webkit_tests_unittest.py.

In this CL:
 - remove unused arg in helper function
 - rename methods to conform to naming convention
 - add pylint disable to not warn about testing protected methods

BUG=643937

Review-Url: https://codereview.chromium.org/2715573002
Cr-Commit-Position: refs/heads/master@{#452317}
Committed:
https://chromium.googlesource.com/chromium/src/+/aaa73ea0f5ac4aadf0f30e12a3e8...
==========

[commit-bot: I haz the power, 2017-02-23 00:54:21]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/aaa73ea0f5ac4aadf0f30e12a3e8...