Drop forceRLE to simplify aaa_walk_convex_edges

The virtual flush function doesn't seem to affect the performance much.
Maybe there's a 1% drop in performance in nanobench against
fill_big_triangle and fill_big_circle, but that's too small a change for
nanobench to reliabily diffrentiate.

The smooth jump (ignore fractional y if edges don't change their
directions significantly) no longer needs to be guarded against SkAAClip
because our recent CL (https://skia-review.googlesource.com/c/4636/)
make left/rightBound much tighter.

BUG=skia:

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4899

Change-Id: If323013b810cc1ff5f6dbb868a8981354ee6f9b5
Reviewed-on: https://skia-review.googlesource.com/4899
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Stan Iliev <stani@google.com>
Commit-Queue: Yuqian Li <liyuqian@google.com>
Commit-Queue: Stan Iliev <stani@google.com>

0 files changed, 0 insertions, 0 deletions