Make canvas pass rrects along to clip stack

BUG=skia:2181
R=robertphillips@google.com, reed@google.com

Author: bsalomon@google.com

Review URL: https://codereview.chromium.org/167283004

git-svn-id: http://skia.googlecode.com/svn/trunk@13470 2bbb7eff-a529-9590-31e7-b0007b416f81
2 files changed