split tight quads and cubics

src/pathops/SkOpContour.cpp

Index: src/pathops/SkOpContour.cpp
diff --git a/src/pathops/SkOpContour.cpp b/src/pathops/SkOpContour.cpp
index 3b2318c306c5b88e55403907182a39dfb7dcc11d..981bd29573cc9981d0c7a8b2e5621201ec82e3d4 100644
--- a/src/pathops/SkOpContour.cpp
+++ b/src/pathops/SkOpContour.cpp
@@ -10,7 +10,7 @@
 #include "SkReduceOrder.h"
 #include "SkTSort.h"
 
-SkOpSegment* SkOpContour::addCurve(SkPath::Verb verb, const SkPoint pts[4]) {
+SkOpSegment* SkOpContour::addCurve(SkPath::Verb verb, const SkPoint pts[4], SkScalar weight) {
     SkChunkAlloc* allocator = this->globalState()->allocator();
     switch (verb) {
         case SkPath::kLine_Verb: {
@@ -24,7 +24,9 @@ SkOpSegment* SkOpContour::addCurve(SkPath::Verb verb, const SkPoint pts[4]) {
             return appendSegment().addQuad(ptStorage, this);
         } break;
         case SkPath::kConic_Verb: {
-            SkASSERT(0);  // the original curve is a cubic, which will never reduce to a conic
+            SkPoint* ptStorage = SkOpTAllocator<SkPoint>::AllocateArray(allocator, 3);
+            memcpy(ptStorage, pts, sizeof(SkPoint) * 3);
+            return appendSegment().addConic(ptStorage, weight, this);
         } break;
         case SkPath::kCubic_Verb: {
             SkPoint* ptStorage = SkOpTAllocator<SkPoint>::AllocateArray(allocator, 4);