style-queue tries to apply the patch twice

style-queue tries to apply the patch twice
https://bugs.webkit.org/show_bug.cgi?id=79459

Reviewed by Eric Seidel.

Previously, we applied the patch using both apply-patch and
check-style.  This patch introduces a check-style-local to mirror the
apply-watchlist-local, which operates on the current working diff.

This patch also cleans up some other bugs I found by running the queue
locally for a while.  The queue still prints out a slightly
less-than-ideal message on the bugs when it find an error, but it's ok
for now.  We'll need to iterate a bit.

* Scripts/webkitpy/tool/bot/stylequeuetask.py:
(StyleQueueTask.validate):
(StyleQueueTask._check_style):
* Scripts/webkitpy/tool/commands/download.py:
(CheckStyleLocal):
* Scripts/webkitpy/tool/commands/earlywarningsystem_unittest.py:
(EarlyWarningSytemTest._default_expected_stderr):
(EarlyWarningSytemTest._test_testing_ews):
* Scripts/webkitpy/tool/commands/queues.py:
(AbstractReviewQueue.handle_script_error):
(StyleQueue.review_patch):
* Scripts/webkitpy/tool/commands/queues_unittest.py:
* Scripts/webkitpy/tool/commands/queuestest.py:
(QueuesTest.assert_queue_outputs):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@108744 268f45cc-cd09-0410-ab3c-d52691b4dbfc