Allow Length::nonNanCalculatedValue to take a LayoutUnit

Source/platform/LengthFunctions.cpp

 /*
     Copyright (C) 1999 Lars Knoll (knoll@kde.org)
     Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
     Copyright (C) 2011 Rik Cabanier (cabanier@adobe.com)
     Copyright (C) 2011 Adobe Systems Incorporated. All rights reserved.
     Copyright (C) 2012 Motorola Mobility, 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
     License as published by the Free Software Foundation; either
@@ skipping 53 matching lines @@
 
 LayoutUnit minimumValueForLength(const Length& length, LayoutUnit maximumValue)
 {
     switch (length.type()) {
     case Fixed:
         return length.value();
     case Percent:
         // Don't remove the extra cast to float. It is needed for rounding on 32-bit Intel machines that use the FPU stack.
         return static_cast<float>(maximumValue * length.percent() / 100.0f);
     case Calculated:
-        return length.nonNanCalculatedValue(maximumValue);
+        return length.nonNanCalculatedValue(maximumValue.toFloat());

[Julien - ping for review, 2015/01/23 10:22:26]

How about we just pass a LayoutUnit to the function?

     case FillAvailable:
     case Auto:
         return 0;
     case Intrinsic:
     case MinIntrinsic:
     case MinContent:
     case MaxContent:
     case FitContent:
     case ExtendToZoom:
     case DeviceWidth:
@@ skipping 38 matching lines @@
     ASSERT_NOT_REACHED();
     return 0;
 }
 
 FloatSize floatSizeForLengthSize(const LengthSize& lengthSize, const FloatSize& boxSize)
 {
     return FloatSize(floatValueForLength(lengthSize.width(), boxSize.width()), floatValueForLength(lengthSize.height(), boxSize.height()));
 }
 
 } // namespace blink