Only run pylint on Windows in PRESUBMIT

Only run pylint on Windows in PRESUBMIT

As a slight improvement for making changes on Windows, at least run
the pylint steps. The tests do not currently work with a variety of
failures, but at least running pylint would have caught the regressions
encountered here https://codereview.chromium.org/134313007/#msg19.

R=maruel@chromium.org
BUG=334953
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=245420

[M-A Ruel, 2014-01-17 02:12:26]

lgtm with appropriate fixes

https://codereview.chromium.org/137243003/diff/1/PRESUBMIT.py
File PRESUBMIT.py (right):

https://codereview.chromium.org/137243003/diff/1/PRESUBMIT.py#newcode42
PRESUBMIT.py:42: if not sys.platform.startswith(('cygwin', 'win32')):
if not input_api.platform.startswith(('cygwin', 'win32')):

no need to import sys.

https://codereview.chromium.org/137243003/diff/1/PRESUBMIT.py#newcode43
PRESUBMIT.py:43: tests += unit_tests
tests.extend(unit_tests)

[scottmg, 2014-01-17 03:53:09]

https://codereview.chromium.org/137243003/diff/1/PRESUBMIT.py
File PRESUBMIT.py (right):

https://codereview.chromium.org/137243003/diff/1/PRESUBMIT.py#newcode42
PRESUBMIT.py:42: if not sys.platform.startswith(('cygwin', 'win32')):
On 2014/01/17 02:12:26, M-A Ruel wrote:
> if not input_api.platform.startswith(('cygwin', 'win32')):
> 
> no need to import sys.

Done.

https://codereview.chromium.org/137243003/diff/1/PRESUBMIT.py#newcode43
PRESUBMIT.py:43: tests += unit_tests
On 2014/01/17 02:12:26, M-A Ruel wrote:
> tests.extend(unit_tests)

Done.

[commit-bot: I haz the power, 2014-01-17 03:53:33]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/scottmg@chromium.org/137243003/60001

[commit-bot: I haz the power, 2014-01-17 03:55:45]

Change committed as 245420