shape ops work in progress

first cut at getting binary ops to work
(union/intersection/diff/xor)

git-svn-id: http://skia.googlecode.com/svn/trunk@6375 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/experimental/Intersection/EdgeWalker_Test.h b/experimental/Intersection/EdgeWalker_Test.h
index 55f8bf3..30c8ace 100644
--- a/experimental/Intersection/EdgeWalker_Test.h
+++ b/experimental/Intersection/EdgeWalker_Test.h
@@ -22,6 +22,7 @@
 extern bool testSimplifyx(SkPath& path, bool useXor, SkPath& out,
         State4& state, const char* pathStr);
 extern bool testSimplifyx(const SkPath& path);
+extern bool testShapeOp(const SkPath& a, const SkPath& b, const ShapeOp );
 
 struct State4 {
     State4();