Make the constructor of a LayoutRect from an IntRect explicit.

Source/core/dom/DocumentMarkerController.cpp

Index: Source/core/dom/DocumentMarkerController.cpp
diff --git a/Source/core/dom/DocumentMarkerController.cpp b/Source/core/dom/DocumentMarkerController.cpp
index c531e10ce80c0494224d6ba9698b85ce52443493..e667262e887fdff247608b820e97dc61a1f8d8c1 100644
--- a/Source/core/dom/DocumentMarkerController.cpp
+++ b/Source/core/dom/DocumentMarkerController.cpp
@@ -124,7 +124,7 @@ void DocumentMarkerController::addTextMatchMarker(const Range* range, bool activ
             // matches off-screen are (that haven't been painted yet).
             Node* node = markedText.startContainer();
             DocumentMarkerVector markers = markersFor(node);
-            toRenderedDocumentMarker(markers[markers.size() - 1])->setRenderedRect(range->boundingBox());
+            toRenderedDocumentMarker(markers[markers.size() - 1])->setRenderedRect(LayoutRect(range->boundingBox()));
         }
     }
 }