Fix presubmit check to account for e.g. fooblat_unittest_android.cc

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 gcl.
 """
 
@@ skipping 43 matching lines @@
 
 def _CheckNoProductionCodeUsingTestOnlyFunctions(input_api, output_api):
   """Attempts to prevent use of functions intended only for testing in
   non-testing code. For now this is just a best-effort implementation
   that ignores header files and may have some false positives. A
   better implementation would probably need a proper C++ parser.
   """
   # We only scan .cc files and the like, as the declaration of
   # for-testing functions in header files are hard to distinguish from
   # calls to such functions without a proper C++ parser.
+  platform_specifiers = r'(_(android|chromeos|gtk|mac|posix|win))?'
   source_extensions = r'\.(cc|cpp|cxx|mm)$'
   file_inclusion_pattern = r'.+%s' % source_extensions
   file_exclusion_patterns = (
       r'.*[/\\](test_|mock_).+%s' % source_extensions,
       r'.+_test_(base|support|util)%s' % source_extensions,
-      r'.+_(api|browser|perf|unit|ui)?test%s' % source_extensions,
+      r'.+_(api|browser|perf|unit|ui)?test%s%s' % (platform_specifiers,
+                                                   source_extensions),
       r'.+profile_sync_service_harness%s' % source_extensions,
       )
   path_exclusion_patterns = (
       r'.*[/\\](test|tool(s)?)[/\\].*',
       # At request of folks maintaining this folder.
       r'chrome[/\\]browser[/\\]automation[/\\].*',
       )
 
   base_function_pattern = r'ForTest(ing)?|for_test(ing)?'
   inclusion_pattern = input_api.re.compile(r'(%s)\s*\(' % base_function_pattern)
@@ skipping 285 matching lines @@
   for non_android_re in (aura_re, win_re):
     if all(re.search(non_android_re, f) for f in affected_files):
       possibly_android = False
       break
   if possibly_android:
     for f in change.AffectedFiles():
       if any(re.search(r, f.LocalPath()) for r in android_re_list):
         preferred.append('android')
         break
   return preferred