Remove enclosingLayoutRect calls per FIXME. These are hot in profiles.

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

 /*
  * Copyright (C) 2006 Oliver Hunt <ojh16@student.canterbury.ac.nz>
  * Copyright (C) 2006 Apple Computer Inc.
  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  * Copyright (C) 2011 Torch Mobile (Beijing) CO. Ltd. 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
@@ skipping 89 matching lines @@
         if (childRect)
             childRect->unite(boxRect);
     }
 }
 
 void SVGRootInlineBox::layoutRootBox(const LayoutRect& childRect)
 {
     LayoutBlockFlow& parentBlock = block();
 
     // Finally, assign the root block position, now that all content is laid out.
-    // FIXME: the call to enclosingLayoutRect() below is temporary and should be removed once
-    // the transition to LayoutUnit-based types is complete (crbug.com/321237)
-    LayoutRect boundingRect = enclosingLayoutRect(childRect);
+    LayoutRect boundingRect = childRect;
     parentBlock.setLocation(boundingRect.location());
     parentBlock.setSize(boundingRect.size());
 
     // Position all children relative to the parent block.
     for (InlineBox* child = firstChild(); child; child = child->nextOnLine()) {
         // Skip generated content.
         if (!child->layoutObject().node())
             continue;
         child->adjustPosition(-childRect.x(), -childRect.y());
     }
@@ skipping 104 matching lines @@
     }
 }
 
 void SVGRootInlineBox::reorderValueLists(Vector<SVGTextLayoutAttributes*>& attributes)
 {
     Vector<InlineBox*> leafBoxesInLogicalOrder;
     collectLeafBoxesInLogicalOrder(leafBoxesInLogicalOrder, reverseInlineBoxRangeAndValueListsIfNeeded, &attributes);
 }
 
 } // namespace blink