Fix uploading with non deprecated master names.

deprecated_master would be referenced before assignment when
uploaded with the chromium.linux style master name.

TBR since I had to push this already to fix the broken push
and rolling back wasn't an option.

TBR=szager@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/462883002

git-svn-id: svn://svn.chromium.org/blink/trunk@180003 bbb929c8-8fbe-4397-9dbb-9b2b20218538