Make the constructor of a LayoutRect from an IntRect explicit.

Source/core/layout/svg/LayoutSVGRoot.cpp

Index: Source/core/layout/svg/LayoutSVGRoot.cpp
diff --git a/Source/core/layout/svg/LayoutSVGRoot.cpp b/Source/core/layout/svg/LayoutSVGRoot.cpp
index 54cc730f81d9a0a1ce5e682124c5b32db5b9a15d..95c126f6d2364f895fdd85f3124b013a6386c68a 100644
--- a/Source/core/layout/svg/LayoutSVGRoot.cpp
+++ b/Source/core/layout/svg/LayoutSVGRoot.cpp
@@ -349,7 +349,7 @@ LayoutRect LayoutSVGRoot::clippedOverflowRectForPaintInvalidation(const LayoutBo
     }
 
     // Compute the paint invalidation rect in the parent coordinate space.
-    LayoutRect rect = enclosingIntRect(paintInvalidationRect);
+    LayoutRect rect(enclosingIntRect(paintInvalidationRect));
     LayoutReplaced::mapRectToPaintInvalidationBacking(paintInvalidationContainer, rect, paintInvalidationState);
     return rect;
 }
@@ -361,7 +361,7 @@ void LayoutSVGRoot::mapRectToPaintInvalidationBacking(const LayoutBoxModelObject
 
     // Apply initial viewport clip
     if (shouldApplyViewportClip())
-        rect.intersect(pixelSnappedBorderBoxRect());
+        rect.intersect(LayoutRect(pixelSnappedBorderBoxRect()));
 
     LayoutReplaced::mapRectToPaintInvalidationBacking(paintInvalidationContainer, rect, paintInvalidationState);
 }