[noupstream] allow git-cl to push from readonly sources

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/6594047
diff --git a/codereview.settings b/codereview.settings
index 44fe365..9643a80 100644
--- a/codereview.settings
+++ b/codereview.settings
@@ -3,3 +3,5 @@
 CC_LIST: native-client-reviews@googlegroups.com
 STATUS: http://nativeclient-status.appspot.com/status
 VIEW_VC: http://git.chromium.org/gitweb/?p=nacl-gdb.git;a=commit;h=
+PUSH_URL_CONFIG: url.ssh://git.chromium.org.pushinsteadof
+ORIGIN_URL_CONFIG: http://git.chromium.org/git