Factor out gcl.GetRepositoryRoot() into scm.SVN.GetCheckoutRoot()

tests/scm_unittest.py

 #!/usr/bin/python
 # Copyright (c) 2006-2009 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.
 
 """Unit tests for scm.py."""
 
 import shutil
 import tempfile
 
@@ skipping 121 matching lines @@
     BaseSCMTestCase.setUp(self)
     self.root_dir = self.Dir()
     self.args = self.Args()
     self.url = self.Url()
     self.relpath = 'asf'
 
   def testMembersChanged(self):
     self.mox.ReplayAll()
     members = [
         'COMMAND', 'Capture', 'CaptureHeadRevision', 'CaptureInfo',
-        'CaptureStatus', 'DiffItem', 'GetEmail', 'GetFileProperty', 'IsMoved',
+        'CaptureStatus', 'DiffItem', 'GetCheckoutRoot', 'GetEmail',
+        'GetFileProperty', 'IsMoved',
         'ReadSimpleAuth', 'Run', 'RunAndFilterOutput', 'RunAndGetFileList',
     ]
     # If this test fails, you should add the relevant test.
     self.compareMembers(scm.SVN, members)
 
   def testGetFileInfo(self):
     xml_text = r"""<?xml version="1.0"?>
 <info>
 <entry kind="file" path="%s" revision="14628">
 <url>http://src.chromium.org/svn/trunk/src/chrome/app/d</url>
@@ skipping 148 matching lines @@
     self.mox.ReplayAll()
     info = scm.SVN.CaptureStatus(None)
     self.assertEquals(info, [])
 
 
 if __name__ == '__main__':
   import unittest
   unittest.main()
 
 # vim: ts=2:sw=2:tw=80:et: