When traversing convex paths only consume zero length segments.

BUG=chromium:688671

Change-Id: Ic27dde1ea7c1fe8b6afa0a05c637d8272e88b803
Reviewed-on: https://skia-review.googlesource.com/9071
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
diff --git a/src/gpu/ops/GrAAConvexPathRenderer.cpp b/src/gpu/ops/GrAAConvexPathRenderer.cpp
index b98b5c8..4a2c6e2 100644
--- a/src/gpu/ops/GrAAConvexPathRenderer.cpp
+++ b/src/gpu/ops/GrAAConvexPathRenderer.cpp
@@ -281,7 +281,7 @@
 
     for (;;) {
         SkPoint pts[4];
-        SkPath::Verb verb = iter.next(pts);
+        SkPath::Verb verb = iter.next(pts, true, true);
         switch (verb) {
             case SkPath::kMove_Verb:
                 m.mapPoints(pts, 1);