Move setup of SkPictCopyInfo into SkPicture::clone

This refactoring seemed sufficiently fraught that I've broken it out of a larger patch to move fBitmapHeap out of SkPictureRecord/SkPicturePlayback and into SkPicture.

SkPicturePlayback's friending of SkPicture should be temporary and just allows SkPicture to access items that will be moving into it soon.

R=scroggo@google.com, reed@google.com

Author: robertphillips@google.com

Review URL: https://codereview.chromium.org/256653006

git-svn-id: http://skia.googlecode.com/svn/trunk/src@14440 2bbb7eff-a529-9590-31e7-b0007b416f81
3 files changed