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

Source/core/layout/HitTestLocation.cpp

 /*
  * Copyright (C) 2006, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies)
  *
  * 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.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 118 matching lines @@
 
     // If the transformed rect is rectilinear the bounding box intersection was accurate.
     if (m_isRectilinear)
         return true;
 
     // If rect fully contains our bounding box, we are also sure of an intersection.
     if (rect.contains(boundingBox))
         return true;
 
     // Otherwise we need to do a slower quad based intersection test.
-    return m_transformedRect.intersectsRect(rect);
+    return m_transformedRect.intersectsRect(FloatRect(rect));
 }
 
 bool HitTestLocation::intersects(const LayoutRect& rect) const
 {
     return intersectsRect(rect, LayoutRect(m_boundingBox));
 }
 
 bool HitTestLocation::intersects(const FloatRect& rect) const
 {
     return intersectsRect(rect, FloatRect(m_boundingBox));
@@ skipping 16 matching lines @@
 
     IntSize actualPadding(leftPadding + rightPadding, topPadding + bottomPadding);
     // As IntRect is left inclusive and right exclusive (seeing IntRect::contains(x, y)), adding "1".
     // FIXME: Remove this once non-rect based hit-detection stops using IntRect:intersects.
     actualPadding += IntSize(1, 1);
 
     return IntRect(actualPoint, actualPadding);
 }
 
 } // namespace blink