Adjust start and end points of arcs based on CTM

GPU was effectively ignoring rotation and scale when drawing arcs. Found
this with a new GM I'll be adding. Hoping to land that separately.

Bug: skia:
Change-Id: I14d36ceaa478193c1a75fb2d06704e7d51f46d02
Reviewed-on: https://skia-review.googlesource.com/17218
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
1 file changed