Add svg support to pathfinder tool

Bug: skia:
Change-Id: I9302491c983fae5e2e84edc4ee135a917b099a42
Reviewed-on: https://skia-review.googlesource.com/52360
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Jim Van Verth <jvanverth@google.com>
1 file changed