Enforce GN formatting for *.typemap files.

presubmit_canned_checks.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.
 
 """Generic presubmit checks that can be reused by other presubmit checks."""
 
 import os as _os
 _HERE = _os.path.dirname(_os.path.abspath(__file__))
 
 # Justifications for each filter:
@@ skipping 1152 matching lines @@
   # As this is just a warning, ignore all other errors if the user
   # happens to have a broken clang-format, doesn't use git, etc etc.
   return []
 
 
 def CheckGNFormatted(input_api, output_api):
   import gn
   affected_files = input_api.AffectedFiles(
       include_deletes=False,
       file_filter=lambda x: x.LocalPath().endswith('.gn') or
-                            x.LocalPath().endswith('.gni'))
+                            x.LocalPath().endswith('.gni') or
+                            x.LocalPath().endswith('.typemap'))
   warnings = []
   for f in affected_files:
     cmd = ['gn', 'format', '--dry-run', f.AbsoluteLocalPath()]
     rc = gn.main(cmd)
     if rc == 2:
       warnings.append(output_api.PresubmitPromptWarning(
           '%s requires formatting. Please run `gn format --in-place %s`.' % (
               f.AbsoluteLocalPath(), f.LocalPath())))
   # It's just a warning, so ignore other types of failures assuming they'll be
   # caught elsewhere.
   return warnings