Remove Skia's forked buildbot code

slave/skia_slave_scripts/chrome_canary_update.py

-#!/usr/bin/env python
-# Copyright (c) 2013 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-""" Check out the Skia sources. """
-
-# build_step must be imported first, since it does some tweaking of PYTHONPATH.
-from build_step import BuildStep
-from utils import sync_skia_in_chrome
-import sys
-
-
-class ChromeCanaryUpdate(BuildStep):
-  def __init__(self, timeout=24000, no_output_timeout=4800, attempts=5,
-               **kwargs):
-    super(ChromeCanaryUpdate, self).__init__(
-        timeout=timeout,
-        no_output_timeout=no_output_timeout,
-        attempts=attempts,
-        **kwargs)
-
-  def _Run(self):
-    chrome_rev = self._args.get('chrome_rev',
-                                sync_skia_in_chrome.CHROME_REV_MASTER)
-    skia_rev = (sync_skia_in_chrome.SKIA_REV_DEPS
-                    if self._args.get('use_lkgr_skia')
-                else (self._revision or sync_skia_in_chrome.SKIA_REV_MASTER))
-    (got_skia_rev, got_chrome_rev) = sync_skia_in_chrome.Sync(
-        skia_revision=skia_rev,
-        chrome_revision=chrome_rev,
-        gyp_defines=self._flavor_utils.gyp_defines,
-        gyp_generators=self._flavor_utils.gyp_generators)
-    print 'Skia updated to %s' % got_skia_rev
-    print 'Chrome updated to %s' % got_chrome_rev
-
-
-if '__main__' == __name__:
-  sys.exit(BuildStep.RunBuildStep(ChromeCanaryUpdate))