Debugger is the last user of the deprecated SkPaintFilterCanvas
constructor. Stop using it and remove the constructor.
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=3268
Change-Id: I3e9180d48abdf86cb2c05bd8d95acabcdaa70427
Reviewed-on: https://skia-review.googlesource.com/3268
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Mike Reed <reed@google.com>