path ops work in progress

tests/PathOpsOpTest.cpp

Index: tests/PathOpsOpTest.cpp
===================================================================
--- tests/PathOpsOpTest.cpp	(revision 9111)
+++ tests/PathOpsOpTest.cpp	(working copy)
@@ -1343,9 +1343,23 @@
     testPathOp(reporter, path, pathB, kDifference_PathOp);
 }
 
+static void cubicOp71d(skiatest::Reporter* reporter) {
+    SkPath path, pathB;
+    path.setFillType(SkPath::kWinding_FillType);
+    path.moveTo(0,1);
+    path.cubicTo(0,5, 4,1, 6,4);
+    path.close();
+    pathB.setFillType(SkPath::kWinding_FillType);
+    pathB.moveTo(1,4);
+    pathB.cubicTo(4,6, 1,0, 5,0);
+    pathB.close();
+    testPathOp(reporter, path, pathB, kDifference_PathOp);
+}
+
 static void (*firstTest)(skiatest::Reporter* ) = 0;
 
 static struct TestDesc tests[] = {
+    TEST(cubicOp71d),
     TEST(skp5),
     TEST(skp4),
     TEST(skp3),