Rule out new setMatrixClip() overrides via presubmit

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 171 matching lines @@
         r"^net[\\\/]url_request[\\\/]test_url_fetcher_factory\.cc$",
         r"^remoting[\\\/]host[\\\/]security_key[\\\/]"
             "gnubby_auth_handler_linux\.cc$",
         r"^ui[\\\/]ozone[\\\/]platform[\\\/]drm[\\\/]host[\\\/]"
             "drm_display_host_manager\.cc$",
         r"^ui[\\\/]base[\\\/]material_design[\\\/]"
             "material_design_controller\.cc$",
       ),
     ),
     (
+      'setMatrixClip',
+      (
+        'Overriding setMatrixClip() is prohibited; ',
+        'the base function is deprecated. ',
+      ),
+      True,
+      (),
+    ),
+    (
       'skia::RefPtr',
       (
         'The use of skia::RefPtr is prohibited. ',
         'Please use sk_sp<> instead.'
       ),
       True,
       (),
     ),
     (
       'SkRefPtr',
@@ skipping 1933 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