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

Source/core/layout/LayoutBlock.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * 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
@@ skipping 1667 matching lines @@
         // FIXME: isPointInOverflowControl() doesn't handle rect-based tests yet.
         if (!result.addNodeToListBasedTestResult(nodeForHitTest(), locationInContainer))
             return true;
     }
 
     if (style()->clipPath()) {
         switch (style()->clipPath()->type()) {
         case ClipPathOperation::SHAPE: {
             ShapeClipPathOperation* clipPath = toShapeClipPathOperation(style()->clipPath());
             // FIXME: handle marginBox etc.
-            if (!clipPath->path(borderBoxRect()).contains(FloatPoint(locationInContainer.point() - localOffset), clipPath->windRule()))
+            if (!clipPath->path(FloatRect(borderBoxRect())).contains(FloatPoint(locationInContainer.point() - localOffset), clipPath->windRule()))
                 return false;
             break;
         }
         case ClipPathOperation::REFERENCE:
             // FIXME: handle REFERENCE
             break;
         }
     }
 
     // If we have clipping, then we can't have any spillout.
@@ skipping 1219 matching lines @@
 void LayoutBlock::showLineTreeAndMark(const InlineBox* markedBox1, const char* markedLabel1, const InlineBox* markedBox2, const char* markedLabel2, const LayoutObject* obj) const
 {
     showLayoutObject();
     for (const RootInlineBox* root = firstRootBox(); root; root = root->nextRootBox())
         root->showLineTreeAndMark(markedBox1, markedLabel1, markedBox2, markedLabel2, obj, 1);
 }
 
 #endif
 
 } // namespace blink