style-queue shouldn't spam bugs if it fails to update its working copy

style-queue shouldn't spam bugs if it fails to update its working copy
https://bugs.webkit.org/show_bug.cgi?id=79412

Reviewed by Eric Seidel.

This patch moves style-queue over to the new PatchAnalysisTask
infrastructure, which is smarter about retrying patches when update
fails.

* Scripts/webkitpy/common/system/executive_mock.py:
(MockExecutive.run_and_throw_if_fail):
* Scripts/webkitpy/tool/bot/earlywarningsystemtask.py:
* Scripts/webkitpy/tool/bot/patchanalysistask.py:
(UnableToApplyPatch):
(UnableToApplyPatch.__init__):
(PatchAnalysisTask.__init__):
* Scripts/webkitpy/tool/bot/stylequeuetask.py: Added.
(StyleQueueTaskDelegate):
(StyleQueueTaskDelegate.parent_command):
(StyleQueueTask):
(StyleQueueTask.validate):
(StyleQueueTask._check_style):
(StyleQueueTask._apply_watch_list):
(StyleQueueTask.run):
* Scripts/webkitpy/tool/commands/earlywarningsystem.py:
* Scripts/webkitpy/tool/commands/queues.py:
(StyleQueue):
(StyleQueue.should_proceed_with_work_item):
(StyleQueue.review_patch):
(StyleQueue.run_command):
(StyleQueue.command_passed):
(StyleQueue.command_failed):
(StyleQueue.expected_failures):
(StyleQueue.refetch_patch):
* Scripts/webkitpy/tool/commands/queues_unittest.py:
(StyleQueueTest.test_style_queue_with_style_exception):
(test_style_queue_with_watch_list_exception):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@108691 268f45cc-cd09-0410-ab3c-d52691b4dbfc