Allow Length::nonNanCalculatedValue to take a LayoutUnit

Source/platform/Length.h

 /*
     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.
 
     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.
@@ skipping 273 matching lines @@
         if (range == ValueRangeNonNegative)
             blendedValue = clampTo<float>(blendedValue, 0);
         return Length(blendedValue, resultType);
     }
 
     float getFloatValue() const
     {
         ASSERT(!isMaxSizeNone());
         return m_isFloat ? m_floatValue : m_intValue;
     }
-    float nonNanCalculatedValue(int maxValue) const;
+    float nonNanCalculatedValue(float maxValue) const;
 
     Length subtractFromOneHundredPercent() const;
 
 private:
     int getIntValue() const
     {
         ASSERT(!isMaxSizeNone());
         return m_isFloat ? static_cast<int>(m_floatValue) : m_intValue;
     }
 
@@ skipping 14 matching lines @@
     bool m_quirk;
     unsigned char m_type;
     bool m_isFloat;
 };
 
 PLATFORM_EXPORT Vector<Length> parseHTMLAreaElementCoords(const String&);
 
 } // namespace blink
 
 #endif // Length_h