remove contains(x,y) for rects and rrects ... not well defined, and unused

BUG=
R=robertphillips@google.com

Review URL: https://codereview.chromium.org/51953003

git-svn-id: http://skia.googlecode.com/svn/trunk@12022 2bbb7eff-a529-9590-31e7-b0007b416f81
5 files changed