Add new entry point that supports fallback font selection based on language.

BUG= chromium:287995
R=reed@google.com, wangxianzhu@chromium.org

Review URL: https://codereview.chromium.org/23819067

git-svn-id: http://skia.googlecode.com/svn/trunk/include@11394 2bbb7eff-a529-9590-31e7-b0007b416f81
2 files changed