Change typefacesMatchesFamily to fall back on getFamilyName

Change typefacesMatchesFamily to check to check the family named
returned by SkTypeface::getFamilyName as a fallback after checking all
family names covered by the family name iterator.

This coveres the case where windows does font substitution.

Covered by fast/css/font-face-locally-installed.html

BUG=294232
R=eseidel@chromium.org

Review URL: https://chromiumcodereview.appspot.com/23902046

git-svn-id: svn://svn.chromium.org/blink/trunk@158074 bbb929c8-8fbe-4397-9dbb-9b2b20218538