diff -r 000000000000 -r 6474c204b198 gfx/skia/trunk/src/core/SkEdgeBuilder.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/skia/trunk/src/core/SkEdgeBuilder.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,52 @@
+
+/*
+ * Copyright 2011 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+#ifndef SkEdgeBuilder_DEFINED
+#define SkEdgeBuilder_DEFINED
+
+#include "SkChunkAlloc.h"
+#include "SkRect.h"
+#include "SkTDArray.h"
+
+struct SkEdge;
+class SkEdgeClipper;
+class SkPath;
+
+class SkEdgeBuilder {
+public:
+    SkEdgeBuilder();
+
+    // returns the number of built edges. The array of those edge pointers
+    // is returned from edgeList().
+    int build(const SkPath& path, const SkIRect* clip, int shiftUp);
+
+    SkEdge** edgeList() { return fEdgeList; }
+
+private:
+    SkChunkAlloc        fAlloc;
+    SkTDArray<SkEdge*>  fList;
+
+    /*
+     *  If we're in general mode, we allcoate the pointers in fList, and this
+     *  will point at fList.begin(). If we're in polygon mode, fList will be
+     *  empty, as we will have preallocated room for the pointers in fAlloc's
+     *  block, and fEdgeList will point into that.
+     */
+    SkEdge**            fEdgeList;
+
+    int                 fShiftUp;
+
+public:
+    void addLine(const SkPoint pts[]);
+    void addQuad(const SkPoint pts[]);
+    void addCubic(const SkPoint pts[]);
+    void addClipper(SkEdgeClipper*);
+
+    int buildPoly(const SkPath& path, const SkIRect* clip, int shiftUp);
+};
+
+#endif