Add back automatic fallback to svn access when http access fails.

tests/trychange_unittest.py

Index: tests/trychange_unittest.py
diff --git a/tests/trychange_unittest.py b/tests/trychange_unittest.py
index 7ec5f0db8538abdad06feef6c9c5a5d2196c1831..9f9a27759044b4b09ab7cac60c5e41b4e90674be 100644
--- a/tests/trychange_unittest.py
+++ b/tests/trychange_unittest.py
@@ -40,10 +40,10 @@ class TryChangeUnittest(TryChangeTestsBase):
   def testMembersChanged(self):
     members = [
       'EscapeDot', 'GIT', 'GuessVCS',
-      'HELP_STRING', 'InvalidScript', 'NoTryServerAccess',
+      'HELP_STRING', 'InvalidScript', 'NoTryServerAccess', 'PrintSuccess',
       'SCM', 'SVN', 'TryChange', 'USAGE',
       'breakpad', 'datetime', 'gclient_utils', 'getpass', 'logging',
-      'optparse', 'os', 'scm', 'shutil', 'socket',
+      'optparse', 'os', 'posixpath', 'scm', 'shutil', 'socket',
       'subprocess', 'sys', 'tempfile', 'urllib',
     ]
     # If this test fails, you should add the relevant test.