Add presubmit check for Google support URL format.

PRESUBMIT_test.py

 #!/usr/bin/env python
 # 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.
 
 import re
 import subprocess
 import unittest
 
 import PRESUBMIT
@@ skipping 1113 matching lines @@
     self.assertTrue('HasAndroidLog.java:3' in msgs[3].items)
     self.assertTrue('IsInBasePackageButImportsLog.java:4' in msgs[3].items)
 
     # Tag must not contain
     nb = len(msgs[4].items)
     self.assertEqual(2, nb,
                      'Expected %d items, found %d: %s' % (2, nb, msgs[4].items))
     self.assertTrue('HasDottedTag.java' in msgs[4].items)
     self.assertTrue('HasOldTag.java' in msgs[4].items)
 
+class GoogleAnswerUrlFormatTest(unittest.TestCase):
+
+  def testCatchAnswerUrlId(self):
+    input_api = MockInputApi()
+    input_api.files = [
+      MockFile('somewhere/file.cc',
+               ['char* host = '
+                '  "https://support.google.com/chrome/answer/123456";']),
+      MockFile('somewhere_else/file.cc',
+               ['char* host = '
+                '  "https://support.google.com/chrome/a/answer/123456";']),
+    ]
+
+    warnings = PRESUBMIT._CheckGoogleSupportAnswerUrl(
+      input_api, MockOutputApi())
+    self.assertEqual(1, len(warnings))
+    self.assertEqual(2, len(warnings[0].items))
+
+  def testAllowAnswerUrlParam(self):
+    input_api = MockInputApi()
+    input_api.files = [
+      MockFile('somewhere/file.cc',
+               ['char* host = '
+                '  "https://support.google.com/chrome/?p=cpn_crash_reports";']),
+    ]
+
+    warnings = PRESUBMIT._CheckGoogleSupportAnswerUrl(
+      input_api, MockOutputApi())
+    self.assertEqual(0, len(warnings))
+
 class HardcodedGoogleHostsTest(unittest.TestCase):
 
   def testWarnOnAssignedLiterals(self):
     input_api = MockInputApi()
     input_api.files = [
       MockFile('content/file.cc',
                ['char* host = "https://www.google.com";']),
       MockFile('content/file.cc',
                ['char* host = "https://www.googleapis.com";']),
       MockFile('content/file.cc',
@@ skipping 122 matching lines @@
     mock_input_api.files = [
       MockAffectedFile('chrome/browser/resources/blah.js', 'arrow => OK here'),
     ]
     warnings = PRESUBMIT._CheckForRiskyJsFeatures(
         mock_input_api, MockOutputApi())
     self.assertEqual(0, len(warnings))
 
 
 if __name__ == '__main__':
   unittest.main()