Convert some call sites to use explicit LayoutRect->FloatRect conversion.

Source/core/layout/LayoutBoxModelObject.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  *           (C) 2005, 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google Inc. 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
@@ skipping 386 matching lines @@
 
 void LayoutBoxModelObject::addOutlineRectsForDescendant(const LayoutObject& descendant, Vector<LayoutRect>& rects, const LayoutPoint& additionalOffset) const
 {
     if (descendant.isText() || descendant.isListMarker())
         return;
 
     if (descendant.hasLayer()) {
         Vector<LayoutRect> layerOutlineRects;
         descendant.addOutlineRects(layerOutlineRects, LayoutPoint());
         for (size_t i = 0; i < layerOutlineRects.size(); ++i) {
-            FloatQuad quadInBox = toLayoutBoxModelObject(descendant).localToContainerQuad(FloatQuad(layerOutlineRects[i]), this);
+            FloatQuad quadInBox = toLayoutBoxModelObject(descendant).localToContainerQuad(FloatQuad(FloatRect(layerOutlineRects[i])), this);
             LayoutRect rect = LayoutRect(quadInBox.boundingBox());
             if (!rect.isEmpty()) {
                 rect.moveBy(additionalOffset);
                 rects.append(rect);
             }
         }
         return;
     }
 
     if (descendant.isBox()) {
@@ skipping 599 matching lines @@
     if (rootElementStyle->hasBackground())
         return false;
 
     if (node() != document().firstBodyElement())
         return false;
 
     return true;
 }
 
 } // namespace blink