Store SkPerlinNoiseShaderImpl's PaintingData inline

No reason to allocate dynamically, now that the impl is private.

Change-Id: I1b6f34fa903149d88fe82f5947c1df899446967e
Reviewed-on: https://skia-review.googlesource.com/18237
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>
1 file changed