remove ref to skia internal concept

Switch chrome to use interface that
does not expose internal Skia concept.

R=fmalita@chromium.org, danakj@chromium.org

Bug: 913930
Change-Id: I3373c791095d4eeb3590f23f474e9c5a3f88a207
Reviewed-on: https://chromium-review.googlesource.com/c/1371924
Reviewed-by: danakj <danakj@chromium.org>
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Cary Clark <caryclark@chromium.org>
Cr-Commit-Position: refs/heads/master@{#615936}
2 files changed