add ViaSVG to dm

BUG=skia:

Change-Id: I52892a0dd466bee6e3abcaa89a373b93493d201f
Reviewed-on: https://skia-review.googlesource.com/8682
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Mike Klein <mtklein@chromium.org>
Reviewed-by: Florin Malita <fmalita@chromium.org>
7 files changed