Reduce glGets for stencil bits.
Clean up GL vs Gr rect conventions for viewport and scissor.

Review URL: http://codereview.appspot.com/4185056/

git-svn-id: http://skia.googlecode.com/svn/trunk@813 2bbb7eff-a529-9590-31e7-b0007b416f81
12 files changed