Make the constructor of a LayoutRect from an IntRect explicit.

Source/core/layout/svg/line/SVGInlineTextBox.cpp

 /**
  * Copyright (C) 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 144 matching lines @@
 
         FloatRectWillBeLayoutRect fragmentRect = selectionRectForTextFragment(fragment, fragmentStartPosition, fragmentEndPosition, style);
         fragment.buildFragmentTransform(fragmentTransform);
         fragmentRect = fragmentTransform.mapRect(fragmentRect.toFloatRect());
 
         selectionRect.unite(fragmentRect);
     }
 
     // FIXME: the call to rawValue() below is temporary and should be removed once the transition
     // to LayoutUnit-based types is complete (crbug.com/321237)
-    return enclosingIntRect(selectionRect.rawValue());
+    return LayoutRect(enclosingIntRect(selectionRect.rawValue()));
 }
 
 void SVGInlineTextBox::paint(const PaintInfo& paintInfo, const LayoutPoint& paintOffset, LayoutUnit, LayoutUnit)
 {
     SVGInlineTextBoxPainter(*this).paint(paintInfo, paintOffset);
 }
 
 TextRun SVGInlineTextBox::constructTextRun(const LayoutStyle& style, const SVGTextFragment& fragment) const
 {
     RenderText* text = &renderer();
@@ skipping 108 matching lines @@
                 renderer().updateHitTestResult(result, locationInContainer.point() - toLayoutSize(accumulatedOffset));
                 if (!result.addNodeToListBasedTestResult(renderer().node(), request, locationInContainer, rect.rawValue()))
                     return true;
             }
         }
     }
     return false;
 }
 
 } // namespace blink