tree d7e2c8fe6b3a03379aa90e715e39d1bd37529d3a
parent c8fcb9ce8294a3b91b26c2dbd77866ba78366c2d
author reed <reed@google.com> 1469019874 -0700
committer Commit bot <commit-bot@chromium.org> 1469019874 -0700

use special-image for imagefilters and save/restore layer

add special virtuals to device, in preparation for using them instead of bitmap for imagefilters

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2155933002

patch from issue 2155933002 at patchset 20001 (http://crrev.com/2155933002#ps20001)

use specialimages instead of bitmaps for imagefiltering

Review-Url: https://codereview.chromium.org/2155063002