Add option to skip rects to drawImageLattice()

src/core/SkRecordDraw.cpp

Index: src/core/SkRecordDraw.cpp
diff --git a/src/core/SkRecordDraw.cpp b/src/core/SkRecordDraw.cpp
index 65455864991888d723ccd696d89432debd48c667..295259131920b841b13ab64af8397084b5bb7b47 100644
--- a/src/core/SkRecordDraw.cpp
+++ b/src/core/SkRecordDraw.cpp
@@ -106,6 +106,7 @@ template <> void Draw::draw(const DrawImageLattice& r) {
     lattice.fXDivs = r.xDivs;
     lattice.fYCount = r.yCount;
     lattice.fYDivs = r.yDivs;
+    lattice.fFlags = (0 == r.flagCount) ? nullptr : r.flags;
     fCanvas->drawImageLattice(r.image.get(), lattice, r.dst, r.paint);
 }