Fix RRect tranform bug

When a RRect is an oval transforming the rectangle and the radii separately can result in a non-oval result (i.e., due to numerical issues some tiny straight edges may creep in). This CL remedies the situation by computing the new radii directly from the transformed rect.

BUG=skia:2696
R=caryclark@google.com

Author: robertphillips@google.com

Review URL: https://codereview.chromium.org/354913004
2 files changed