Add device-independent GPU rendering of ovals.

This permits GPU support for arbitrary matrices. The only exception is not all stroked ovals are supported, as thin ovals and fat strokes do not produce ellipses.

R=robertphillips@google.com, bsalomon@google.com

Author: jvanverth@google.com

Review URL: https://chromiumcodereview.appspot.com/23719004

git-svn-id: http://skia.googlecode.com/svn/trunk@11075 2bbb7eff-a529-9590-31e7-b0007b416f81
2 files changed