Make owners check optional.

presubmit_canned_checks.py

 # Copyright (c) 2010 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.
 
 """Generic presubmit checks that can be reused by other presubmit checks."""
 
 
 ### Description checks
 
 def CheckChangeHasTestField(input_api, output_api):
@@ skipping 820 matching lines @@
     return [ output_api.PresubmitError(
         'Found Singleton<T> in the following header files.\n' +
         'Please move them to an appropriate source file so that the ' +
         'template gets instantiated in a single compilation unit.',
         files) ]
   return []
 
 
 def PanProjectChecks(input_api, output_api,
                      excluded_paths=None, text_files=None,
-                     license_header=None, project_name=None):
+                     license_header=None, project_name=None,
+                     owners_check=True):
   """Checks that ALL chromium orbit projects should use.
 
   These are checks to be run on all Chromium orbit project, including:
     Chromium
     Native Client
     V8
   When you update this function, please take this broad scope into account.
   Args:
     input_api: Bag of input related interfaces.
     output_api: Bag of output related interfaces.
@@ skipping 25 matching lines @@
   # This code loads the default black list (e.g. third_party, experimental, etc)
   # and add our black list (breakpad, skia and v8 are still not following
   # google style and are not really living this repository).
   # See presubmit_support.py InputApi.FilterSourceFile for the (simple) usage.
   black_list = input_api.DEFAULT_BLACK_LIST + excluded_paths
   white_list = input_api.DEFAULT_WHITE_LIST + text_files
   sources = lambda x: input_api.FilterSourceFile(x, black_list=black_list)
   text_files = lambda x: input_api.FilterSourceFile(x, black_list=black_list,
                                                     white_list=white_list)
 
-  results.extend(input_api.canned_checks.CheckOwners(
-      input_api, output_api, source_file_filter=sources))
+  if owners_check:
+    results.extend(input_api.canned_checks.CheckOwners(
+        input_api, output_api, source_file_filter=sources))
 
   results.extend(input_api.canned_checks.CheckLongLines(
       input_api, output_api, source_file_filter=sources))
   results.extend(input_api.canned_checks.CheckChangeHasNoTabs(
       input_api, output_api, source_file_filter=sources))
   results.extend(input_api.canned_checks.CheckChangeHasNoStrayWhitespace(
       input_api, output_api, source_file_filter=sources))
   results.extend(input_api.canned_checks.CheckChangeSvnEolStyle(
       input_api, output_api, source_file_filter=text_files))
   results.extend(input_api.canned_checks.CheckSvnForCommonMimeTypes(
       input_api, output_api))
   results.extend(input_api.canned_checks.CheckLicense(
       input_api, output_api, license_header, source_file_filter=sources))
   results.extend(_CheckConstNSObject(
       input_api, output_api, source_file_filter=sources))
   results.extend(_CheckSingletonInHeaders(
       input_api, output_api, source_file_filter=sources))
   return results