When drawing the Slug, aboutToDraw was never called resulting
in strange drawing matrices and broken image filters. Call
aboutToDraw in Slug drawing needs to use the initial paint from
the convert call. Store this in the Slug instead of the paint
resulting from aboutToDraw. Plumb the initialPaint and the
paint from aboutToDraw to where they need to go.
Bug: chromium:1302290
Change-Id: Id921aa37bf8ff2ecd21cdcdaad0012a7b90f5322
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/533759
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Commit-Queue: Herb Derby <herb@google.com>
74666f4b8c