Add no-op draw overrides to SkNoDrawCanvas

SkNoDrawCanvas is not backed by pixels, but for draw ops not intercepted
by clients we abort rasterization failry late (SkNullBlitter).

BUG=chromium:668925
R=reed@google.com

Change-Id: I4cd80dbbc262936d33410275051ea0b9c04fbc6c
Reviewed-on: https://skia-review.googlesource.com/5543
Commit-Queue: Florin Malita <fmalita@google.com>
Reviewed-by: Mike Reed <reed@google.com>
1 file changed