Address perf regression due adding GrRenderTargetContext::drawShape method

All of the skps that regressed have maskFiltered DRRects that can be drawn as nested rects.
These used to go through the nested rect fast path and will again do so with this CL.

Change-Id: Ic787b89ffe71d2e9b20d394d5e0ce1a0ce135e98
Reviewed-on: https://skia-review.googlesource.com/148666
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
2 files changed