👟 Disable pydeps presumbit on Mac.

PRESUBMIT.py

 # Copyright (c) 2012 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 Chromium.
 
 See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
 for more details about the presubmit API built into depot_tools.
 """
 
@@ skipping 1588 matching lines @@
     cmd = old_pydeps_data[1][1:].strip()
     new_pydeps_data = self._input_api.subprocess.check_output(
         cmd  + ' --output ""', shell=True)
     if old_pydeps_data[2:] != new_pydeps_data.splitlines()[2:]:
       return cmd
 
 
 def _CheckPydepsNeedsUpdating(input_api, output_api, checker_for_tests=None):
   """Checks if a .pydeps file needs to be regenerated."""
   # This check is mainly for Android, and involves paths not only in the
-  # PRESUBMIT.py, but also in the .pydeps files. Just skip it for Windows.
-  if input_api.platform == 'win32':
+  # PRESUBMIT.py, but also in the .pydeps files. It doesn't work on Windows and
+  # Mac, so skip it on other platforms.
+  if input_api.platform != 'linux2':
     return []
   # TODO(agrieve): Update when there's a better way to detect this: crbug/570091
   is_android = input_api.os_path.exists('third_party/android_tools')
   pydeps_files = _ALL_PYDEPS_FILES if is_android else _GENERIC_PYDEPS_FILES
   results = []
   # First, check for new / deleted .pydeps.
   for f in input_api.AffectedFiles(include_deletes=True):
     if f.LocalPath().endswith('.pydeps'):
       if f.Action() == 'D' and f.LocalPath() in _ALL_PYDEPS_FILES:
         results.append(output_api.PresubmitError(
@@ skipping 501 matching lines @@
   results.extend(input_api.canned_checks.CheckTreeIsOpen(
       input_api,
       output_api,
       json_url='http://chromium-status.appspot.com/current?format=json'))
 
   results.extend(input_api.canned_checks.CheckChangeHasBugField(
       input_api, output_api))
   results.extend(input_api.canned_checks.CheckChangeHasDescription(
       input_api, output_api))
   return results