Add base types for path ops

src/pathops/SkPathOpsTriangle.h

Index: src/pathops/SkPathOpsTriangle.h
===================================================================
--- src/pathops/SkPathOpsTriangle.h	(revision 0)
+++ src/pathops/SkPathOpsTriangle.h	(revision 0)
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkPathOpsTriangle_DEFINED
+#define SkPathOpsTriangle_DEFINED
+
+#include "SkPathOpsPoint.h"
+
+struct SkDTriangle {
+    SkDPoint fPts[3];
+    
+    bool contains(const SkDPoint& pt) const;
+
+};
+
+#endif