SkAdvancedTypefaceMetrics:  distinguish between font names

Change-Id: I7d094c7327fae7a6da42b118858c59ab524ee6ae
Reviewed-on: https://skia-review.googlesource.com/117157
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
3 files changed