Add drawBitmapLattice() API

src/core/SkNinePatchIter.h

Index: src/core/SkNinePatchIter.h
diff --git a/src/core/SkNinePatchIter.h b/src/core/SkNinePatchIter.h
deleted file mode 100644
index df06c1f630215637e5e005ebf230f491191517f5..0000000000000000000000000000000000000000
--- a/src/core/SkNinePatchIter.h
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * Copyright 2015 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#ifndef SkNinePatchIter_DEFINED
-#define SkNinePatchIter_DEFINED
-
-#include "SkScalar.h"
-
-struct SkIRect;
-struct SkRect;
-
-/**
- *  Disect a ninepatch request into an sequence of src-rect / dst-rect pairs
- */
-class SkNinePatchIter {
-public:
-    static bool Valid(int imageWidth, int imageHeight, const SkIRect& center);
-
-    SkNinePatchIter(int imageWidth, int imageHeight, const SkIRect& center, const SkRect& dst);
-
-    /**
-     *  While it returns true, use src/dst to draw the image/bitmap
-     */
-    bool next(SkRect* src, SkRect* dst);
-
-private:
-    SkScalar fSrcX[4];
-    SkScalar fSrcY[4];
-    SkScalar fDstX[4];
-    SkScalar fDstY[4];
-
-    int fCurrX;
-    int fCurrY;
-    bool fDone;
-};
-
-#endif