add SkShape baseclass, in the hopes of having SkPicture inherit from that, and also using shapes as the extension mechanism for things like animated-gif git-svn-id: http://skia.googlecode.com/svn/trunk@174 2bbb7eff-a529-9590-31e7-b0007b416f81
compares the result to the original draws git-svn-id: http://skia.googlecode.com/svn/trunk@139 2bbb7eff-a529-9590-31e7-b0007b416f81
git-svn-id: http://skia.googlecode.com/svn/trunk@27 2bbb7eff-a529-9590-31e7-b0007b416f81