After Id766ab16a8d342bf7322a90e076e801271d527d4, GetTable is no longer
used in production due to poor performance and it is now only used in
tests. This CL removes GetTable interface from MinikinFont and update
tests code to use new interfaces, GetFontData, GetFontSize and
GetFontIndex.

Bug: 27860101
Test: Manually done

Change-Id: Ifcd7a348d7fb5af081192899dbcdfc7fb4eebbf9