Remove ".orig" files and add a check to presubmit

PRESUBMIT.py

 # Copyright 2015 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.
 
 """Top-level presubmit script for catapult.
 
 See https://www.chromium.org/developers/how-tos/depottools/presubmit-scripts
 for more details about the presubmit API built into depot_tools.
 """
 import re
@@ skipping 49 matching lines @@
        'and Catapult issues should be prefixed with "catapult:#".' %
        input_api.change.BUG))]
 
 
 def CheckChange(input_api, output_api):
   results = []
   try:
     sys.path += [input_api.PresubmitLocalPath()]
     from catapult_build import js_checks
     from catapult_build import html_checks
+    from catapult_build import repo_checks
     results += input_api.canned_checks.PanProjectChecks(
         input_api, output_api, excluded_paths=_EXCLUDED_PATHS)
     results += CheckChangeLogBug(input_api, output_api)
     results += js_checks.RunChecks(
         input_api, output_api, excluded_paths=_EXCLUDED_PATHS)
     results += html_checks.RunChecks(
         input_api, output_api, excluded_paths=_EXCLUDED_PATHS)
+    results += repo_checks.RunChecks(input_api, output_api)
   finally:
     sys.path.remove(input_api.PresubmitLocalPath())
   return results
 
 
 def CheckChangeOnUpload(input_api, output_api):
   return CheckChange(input_api, output_api)
 
 
 def CheckChangeOnCommit(input_api, output_api):
   return CheckChange(input_api, output_api)