cumulative pathops patch

src/pathops/SkReduceOrder.cpp

Index: src/pathops/SkReduceOrder.cpp
diff --git a/src/pathops/SkReduceOrder.cpp b/src/pathops/SkReduceOrder.cpp
index 6f06447a4715f5009d4241432e6ffba41d3dbb12..c19cd3db4b0475ee2318a218657c2a4555fc37d9 100644
--- a/src/pathops/SkReduceOrder.cpp
+++ b/src/pathops/SkReduceOrder.cpp
@@ -272,6 +272,11 @@ SkPath::Verb SkReduceOrder::Quad(const SkPoint a[3], SkPoint* reducePts) {
 }
 
 SkPath::Verb SkReduceOrder::Cubic(const SkPoint a[4], SkPoint* reducePts) {
+    if (SkDPoint::ApproximatelyEqual(a[0], a[1]) && SkDPoint::ApproximatelyEqual(a[0], a[2])
+            && SkDPoint::ApproximatelyEqual(a[0], a[3])) {
+        reducePts[0] = a[0];
+        return SkPath::kMove_Verb;
+    }
     SkDCubic cubic;
     cubic.set(a);
     SkReduceOrder reducer;