add tests for large cordinates bounds when building aaclip

include/core/SkRect.h

Index: include/core/SkRect.h
diff --git a/include/core/SkRect.h b/include/core/SkRect.h
index 995beb8662ee8a8e395b50435c8e33c44ecce2ca..96bf0f4d9088bf64e8c02dea5e5d625bc9752564 100644
--- a/include/core/SkRect.h
+++ b/include/core/SkRect.h
@@ -75,6 +75,8 @@ struct SK_API SkIRect {
      */
     int height() const { return fBottom - fTop; }
 
+    SkISize size() const { return SkISize::Make(this->width(), this->height()); }
+
     /**
      *  Since the center of an integer rect may fall on a factional value, this
      *  method is defined to return (right + left) >> 1.