[DirectWrite] Force subpixel font sizing to on when DW is enabled

Force subpixel font sizing to be enabled when direct write is enabled
using the --enable-direct-write command line switch. This used to be the
case but broke when sandbox support was added.

BUG=25541
R=cpu@chromium.org

Review URL: https://codereview.chromium.org/248593002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@268879 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed