Remove Skia's forked buildbot code

slave/skia_slave_scripts/update_all_buildslave_checkouts.py

-#!/usr/bin/env python
-# Copyright (c) 2014 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.
-
-
-"""Update the buildbot checkouts for each buildslave on every host.
-
-This differs from UpdateScripts in that it updates ALL of the buildbot script
-checkouts for ALL buildslaves, as opposed to a single buildslave's checkout of
-the buildbot scripts on a single host machine.
-"""
-
-
-import re
-import skia_vars
-import sys
-
-from build_step import BuildStep, BuildStepWarning
-from scripts import run_cmd
-from utils import force_update_checkout
-
-
-BUILDBOT_GIT_URL = skia_vars.GetGlobalVariable('buildbot_git_url')
-
-
-class UpdateAllBuildslaves(BuildStep):
-  def _Run(self):
-    script_path = run_cmd.ResolvablePath('slave', 'skia_slave_scripts', 'utils',
-                                         'force_update_checkout.py')
-    sync_cmd = ['python', script_path]
-    results = run_cmd.run_on_all_slaves_on_all_hosts(sync_cmd)
-    failed = []
-    for host in results.iterkeys():
-      print host
-      # If results[host] is a MultiCommandResults instance, then we have results
-      # for buildslaves running on that machine, which implies that we were able
-      # to log in to the machine successfully.
-      if isinstance(results[host], run_cmd.MultiCommandResults):
-        # We successfully logged into the buildslave host machine.
-        for buildslave in results[host].iterkeys():
-          print ' ', buildslave,
-          # Check and report the results of the command for each buildslave on
-          # this host machine.
-          if results[host][buildslave].returncode != 0:
-            # If the command failed, print its output.
-            failed.append(buildslave)
-            print
-            results[host][buildslave].print_results(pretty=True)
-          else:
-            # If the command succeeded, find and print the commit hash we synced
-            # to.  If we can't find it, then something must have failed, so
-            # print the output and report a failure.
-            match = re.search(
-                force_update_checkout.GOT_REVISION_PATTERN % ('(\w+)'),
-                results[host][buildslave].stdout)
-            if match:
-              print '\t%s' % match.group(1)
-            else:
-              failed.append(host)
-              print
-              results[host][buildslave].print_results(pretty=True)
-      else:
-        # We were unable to log into the buildslave host machine.
-        if results[host].returncode != 0:
-          failed.append(host)
-          results[host].print_results(pretty=True)
-      print
-
-    if failed:
-      print
-      print 'Failed to update the following buildslaves:'
-      for failed_host in failed:
-        print ' ', failed_host
-
-    if failed:
-      # TODO(borenet): Make sure that we can log in to all hosts, then make this
-      # an error.
-      raise BuildStepWarning('Could not update some buildslaves.')
-
-
-if '__main__' == __name__:
-  sys.exit(BuildStep.RunBuildStep(UpdateAllBuildslaves))