tree 828b9fd105e92a6ff21b0dc942da6c015ea8ac73
parent c78eff97549e8e346394d3e228395ceb8a467b35
author Mike Reed <reed@google.com> 1478717998 -0500
committer Skia Commit-Bot <skia-commit-bot@chromium.org> 1478720406 +0000

Change SkCanvas to *not* inherit from SkRefCnt

Definitely tricky for classes like SkNWayCanvas, where the caller (today)
need not pay attention to ownership of the canvases it gave the NWay
(after this CL, the caller *must* managed ownership)

BUG=skia:

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4441

DOCS_PREVIEW= https://skia.org/?cl=4441

Change-Id: Ib1ac07a3cdf0686d78e7aaa4735d45cc90bea081
Reviewed-on: https://skia-review.googlesource.com/4441
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
Reviewed-by: Robert Phillips <robertphillips@google.com>