Enforce clang-format in //base

base/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.
 
 """Chromium presubmit script for src/base.
 
 See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
 for more details on the presubmit API built into depot_tools.
 """
 
@@ skipping 17 matching lines @@
         'See http://groups.google.com/a/chromium.org/group/chromium-dev/' +
         'browse_thread/thread/efb28c10435987fd',
         files) ]
   return []
 
 
 def _CommonChecks(input_api, output_api):
   """Checks common to both upload and commit."""
   results = []
   results.extend(_CheckNoInterfacesInBase(input_api, output_api))
+  results.extend(
+      input_api.canned_checks.CheckPatchFormatted(input_api, output_api))

[danakj, 2016/11/10 23:06:51]

You might want this only on upload though? I'm not sure. At least I've seen it
that way in other places, usually I don't see CheckChangeOnCommit anymore at
all.. CQ life?

   return results
 
 def CheckChangeOnUpload(input_api, output_api):
   results = []
   results.extend(_CommonChecks(input_api, output_api))
   return results
 
 
 def CheckChangeOnCommit(input_api, output_api):
   results = []
   results.extend(_CommonChecks(input_api, output_api))
   return results