Looking into all changed files to find actions.xml.

chrome/browser/resources/PRESUBMIT.py

 # Copyright 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.
 
 """Presubmit script for HTML files in chrome/browser/resources.
 
 See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
 for more details about the presubmit API built into gcl.
 """
 
 ACTION_XML_PATH = '../../../tools/metrics/actions/actions.xml'
 
 def CheckUserActionUpdate(input_api, output_api, action_xml_path):
   """Checks if any new user action has been added."""
-  if any('actions.xml' == input_api.os_path.basename(f.LocalPath()) for f in
-         input_api.AffectedFiles()):
+  if any('actions.xml' == input_api.os_path.basename(f) for f in
+         input_api.change.LocalPaths()):
     # If actions.xml is already included in the changelist, the PRESUBMIT
     # for actions.xml will do a more complete presubmit check.
     return []
 
   file_filter = lambda f: f.LocalPath().endswith('.html')
   action_re = r'(^|\s+)metric\s*=\s*"([^ ]*)"'
   current_actions = None
   for f in input_api.AffectedFiles(file_filter=file_filter):
     for line_num, line in f.ChangedContents():
       match = input_api.re.search(action_re, line)
@@ skipping 59 matching lines @@
   return (match and
       any(input_api.re.search(type_re, match.group(i)) for i in (1, 3)))
 
 
 def CheckChangeOnUpload(input_api, output_api):
   return CheckUserActionUpdate(input_api, output_api, ACTION_XML_PATH)
 
 
 def CheckChangeOnCommit(input_api, output_api):
   return CheckUserActionUpdate(input_api, output_api, ACTION_XML_PATH)