Enable chromium_code=1 on Windows

TBR=dglazkov@chromium.org
R=thakis@chromium.org
BUG=312287

Review URL: https://codereview.chromium.org/60113005

git-svn-id: svn://svn.chromium.org/blink/trunk@161469 bbb929c8-8fbe-4397-9dbb-9b2b20218538