Floating point MQs should not match.

Source/core/css/parser/SizesAttributeParser.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "core/css/parser/SizesAttributeParser.h"
 
 #include "core/MediaTypeNames.h"
 #include "core/css/MediaQueryEvaluator.h"
 #include "core/css/parser/MediaQueryTokenizer.h"
@@ skipping 17 matching lines @@
         return effectiveSize();
     return effectiveSizeDefaultValue();
 }
 
 bool SizesAttributeParser::calculateLengthInPixels(MediaQueryTokenIterator startToken, MediaQueryTokenIterator endToken, float& result)
 {
     if (startToken == endToken)
         return false;
     MediaQueryTokenType type = startToken->type();
     if (type == DimensionToken) {
-        double length;
+        float length;
         if (!CSSPrimitiveValue::isLength(startToken->unitType()))
             return false;
         m_viewportDependant = CSSPrimitiveValue::isViewportPercentageLength(startToken->unitType());
         if ((m_mediaValues->computeLength(startToken->numericValue(), startToken->unitType(), length)) && (length >= 0)) {
             result = clampTo<float>(length);
             return true;
         }
     } else if (type == FunctionToken) {
         SizesCalcParser calcParser(startToken, endToken, m_mediaValues);
         if (!calcParser.isValid())
@@ skipping 97 matching lines @@
 
 unsigned SizesAttributeParser::effectiveSizeDefaultValue()
 {
     // Returning the equivalent of "100vw"
     m_viewportDependant = true;
     return m_mediaValues->viewportWidth();
 }
 
 } // namespace