Add a src rect to drawImageLattice() API

src/gpu/SkGpuDevice.cpp

Index: src/gpu/SkGpuDevice.cpp
diff --git a/src/gpu/SkGpuDevice.cpp b/src/gpu/SkGpuDevice.cpp
index a50b5c6bd644b14ed4b08a478edbf0bfa48c5e39..66956d467a0087df7cef303bc23c4a4580d79e70 100644
--- a/src/gpu/SkGpuDevice.cpp
+++ b/src/gpu/SkGpuDevice.cpp
@@ -1500,8 +1500,7 @@ void SkGpuDevice::drawProducerLattice(const SkDraw& draw, GrTextureProducer* pro
         return;
     }
 
-    std::unique_ptr<SkLatticeIter> iter(
-            new SkLatticeIter(producer->width(), producer->height(), lattice, dst));
+    std::unique_ptr<SkLatticeIter> iter(new SkLatticeIter(lattice, dst));
     fDrawContext->drawImageLattice(fClip, grPaint, *draw.fMatrix, producer->width(),
                                    producer->height(), std::move(iter), dst);
 }