add src-rect-constraint to drawImageRect

src/pipe/SkGPipeRead.cpp

Index: src/pipe/SkGPipeRead.cpp
diff --git a/src/pipe/SkGPipeRead.cpp b/src/pipe/SkGPipeRead.cpp
index 48e0c0641baa2370bd0996c5c521b6d1a41863ae..42f761788f3af88495b0909605da0604edd21453 100644
--- a/src/pipe/SkGPipeRead.cpp
+++ b/src/pipe/SkGPipeRead.cpp
@@ -689,9 +689,11 @@ static void drawImageRect_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32
         src = skip<SkRect>(reader);
     }
     const SkRect* dst = skip<SkRect>(reader);
+    SkCanvas::SrcRectConstraint constraint = (SkCanvas::SrcRectConstraint)reader->readInt();
+
     const SkImage* image = state->getImage(slot);
     if (state->shouldDraw()) {
-        canvas->drawImageRect(image, src, *dst, hasPaint ? &state->paint() : NULL);
+        canvas->drawImageRect(image, src, *dst, hasPaint ? &state->paint() : NULL, constraint);
     }
 }