Enable OAuth2 by default.

tests/owners.sh

 #!/usr/bin/env bash
 
 # 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.
 
 set -e
 
 . ./test-lib.sh
 
@@ skipping 12 matching lines @@
   cat <<END > PRESUBMIT.py
 def CheckChangeOnCommit(input_api, output_api):
   return input_api.canned_checks.CheckOwners(input_api, output_api)
 
 CheckChangeOnUpload = CheckChangeOnCommit
 END
 
   git add OWNERS PRESUBMIT.py ; git commit -q -m "add OWNERS"
 
   test_expect_success "upload succeeds (needs a server running on localhost)" \
-    "$GIT_CL upload -m test master | grep -q 'Issue created'"
+    "$GIT_CL upload --no-oauth2 -m test master | grep -q 'Issue created'"
 
   test_expect_success "git-cl status has a suggested reviewer" \
     "$GIT_CL_STATUS | grep -q 'R=ben@chromium.org'"
 
   test_expect_failure "git-cl dcommit fails w/ missing LGTM" \
-    "$GIT_CL dcommit -f"
+    "$GIT_CL dcommit -f --no-oauth2"
 
   test_expect_success "git-cl dcommit --tbr succeeds" \
-    "$GIT_CL dcommit --tbr -f | grep -q -- '--tbr was specified'"
+    "$GIT_CL dcommit --tbr -f --no-oauth2 | grep -q -- '--tbr was specified'"
 )
 SUCCESS=$?
 
 cleanup
 
 if [ $SUCCESS == 0 ]; then
   echo PASS
 fi