Allow Viewer to filter glyphRunList.

This allows force overriding font settings embedded in the glyphRunList.

Change-Id: I49f15786ec8d35c55f769fc910e009693cfc5879
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/508179
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
1 file changed