add src-rect-constraint to drawImageRect

src/utils/SkNWayCanvas.cpp

Index: src/utils/SkNWayCanvas.cpp
diff --git a/src/utils/SkNWayCanvas.cpp b/src/utils/SkNWayCanvas.cpp
index 8ae842237ffa34830ada900505e727edd5bd581c..c5f84a7c7fd7592a1ad7ac09201897fba62a1288 100644
--- a/src/utils/SkNWayCanvas.cpp
+++ b/src/utils/SkNWayCanvas.cpp
@@ -218,10 +218,10 @@ void SkNWayCanvas::onDrawImage(const SkImage* image, SkScalar left, SkScalar top
 }
 
 void SkNWayCanvas::onDrawImageRect(const SkImage* image, const SkRect* src, const SkRect& dst,
-                                   const SkPaint* paint) {
+                                   const SkPaint* paint SRC_RECT_CONSTRAINT_PARAM(constraint)) {
     Iter iter(fList);
     while (iter.next()) {
-        iter->drawImageRect(image, src, dst, paint);
+        iter->drawImageRect(image, src, dst, paint SRC_RECT_CONSTRAINT_ARG(constraint));
     }
 }