diff -r 000000000000 -r 6474c204b198 gfx/skia/trunk/include/utils/SkCullPoints.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/skia/trunk/include/utils/SkCullPoints.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,71 @@
+
+/*
+ * Copyright 2006 The Android Open Source Project
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+
+#ifndef SkCullPoints_DEFINED
+#define SkCullPoints_DEFINED
+
+#include "SkRect.h"
+
+class SkCullPoints {
+public:
+    SkCullPoints();
+    SkCullPoints(const SkIRect& r);
+
+    void    reset(const SkIRect& r);
+
+    /** Start a contour at (x,y). Follow this with call(s) to lineTo(...)
+    */
+    void    moveTo(int x, int y);
+
+    enum LineToResult {
+        kNo_Result,             //!< line segment was completely clipped out
+        kLineTo_Result,         //!< path.lineTo(pts[1]);
+        kMoveToLineTo_Result    //!< path.moveTo(pts[0]); path.lineTo(pts[1]);
+    };
+    /** Connect a line to the previous call to lineTo (or moveTo).
+    */
+    LineToResult lineTo(int x, int y, SkIPoint pts[2]);
+
+private:
+    SkIRect      fR;             // the caller's rectangle
+    SkIPoint     fAsQuad[4];     // cache of fR as 4 points
+    SkIPoint     fPrevPt;        // private state
+    LineToResult fPrevResult;   // private state
+
+    bool sect_test(int x0, int y0, int x1, int y1) const;
+};
+
+/////////////////////////////////////////////////////////////////////////////////
+
+class SkPath;
+
+/** \class SkCullPointsPath
+
+    Similar to SkCullPoints, but this class handles the return values
+    from lineTo, and automatically builds a SkPath with the result(s).
+*/
+class SkCullPointsPath {
+public:
+    SkCullPointsPath();
+    SkCullPointsPath(const SkIRect& r, SkPath* dst);
+
+    void reset(const SkIRect& r, SkPath* dst);
+
+    void    moveTo(int x, int y);
+    void    lineTo(int x, int y);
+
+private:
+    SkCullPoints    fCP;
+    SkPath*         fPath;
+};
+
+bool SkHitTestPath(const SkPath&, SkRect& target, bool hires);
+bool SkHitTestPath(const SkPath&, SkScalar x, SkScalar y, bool hires);
+
+#endif