Floating point MQs should not match.

Source/core/css/MediaQueryEvaluator.cpp

 /*
  * CSS Media Query Evaluator
  *
  * Copyright (C) 2006 Kimmo Kinnunen <kimmo.t.kinnunen@nokia.com>.
  * Copyright (C) 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Intel Corporation. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
@@ skipping 308 matching lines @@
 static bool gridMediaFeatureEval(const MediaQueryExpValue& value, MediaFeaturePrefix op, const MediaValues&)
 {
     // if output device is bitmap, grid: 0 == true
     // assume we have bitmap device
     float number;
     if (value.isValid() && numberValue(value, number))
         return compareValue(static_cast<int>(number), 0, op);
     return false;
 }
 
-static bool computeLength(const MediaQueryExpValue& value, const MediaValues& mediaValues, int& result)
+static bool computeLength(const MediaQueryExpValue& value, const MediaValues& mediaValues, float& result)
 {
     if (!value.isValue)
         return false;
 
     if (value.unit == CSSPrimitiveValue::CSS_NUMBER) {
         result = clampTo<int>(value.value);
         return !mediaValues.strictMode() || !result;
     }
 
     if (CSSPrimitiveValue::isLength(value.unit))
         return mediaValues.computeLength(value.value, value.unit, result);
     return false;
 }
 
 static bool deviceHeightMediaFeatureEval(const MediaQueryExpValue& value, MediaFeaturePrefix op, const MediaValues& mediaValues)
 {
     if (value.isValid()) {
-        int length;
-        return computeLength(value, mediaValues, length) && compareValue(static_cast<int>(mediaValues.deviceHeight()), length, op);
+        float length;
+        return computeLength(value, mediaValues, length) && compareValue(static_cast<float>(mediaValues.deviceHeight()), length, op);
     }
     // ({,min-,max-}device-height)
     // assume if we have a device, assume non-zero
     return true;
 }
 
 static bool deviceWidthMediaFeatureEval(const MediaQueryExpValue& value, MediaFeaturePrefix op, const MediaValues& mediaValues)
 {
     if (value.isValid()) {
-        int length;
-        return computeLength(value, mediaValues, length) && compareValue(static_cast<int>(mediaValues.deviceWidth()), length, op);
+        float length;
+        return computeLength(value, mediaValues, length) && compareValue(static_cast<float>(mediaValues.deviceWidth()), length, op);
     }
     // ({,min-,max-}device-width)
     // assume if we have a device, assume non-zero
     return true;
 }
 
 static bool heightMediaFeatureEval(const MediaQueryExpValue& value, MediaFeaturePrefix op, const MediaValues& mediaValues)
 {
-    int height = mediaValues.viewportHeight();
+    float height = mediaValues.viewportHeight();
     if (value.isValid()) {
-        int length;
+        float length;
         return computeLength(value, mediaValues, length) && compareValue(height, length, op);
     }
 
     return height;
 }
 
 static bool widthMediaFeatureEval(const MediaQueryExpValue& value, MediaFeaturePrefix op, const MediaValues& mediaValues)
 {
-    int width = mediaValues.viewportWidth();
+    float width = mediaValues.viewportWidth();
     if (value.isValid()) {
-        int length;
+        float length;
         return computeLength(value, mediaValues, length) && compareValue(width, length, op);
     }
 
     return width;
 }
 
 // Rest of the functions are trampolines which set the prefix according to the media feature expression used.
 
 static bool minColorMediaFeatureEval(const MediaQueryExpValue& value, MediaFeaturePrefix, const MediaValues& mediaValues)
 {
@@ skipping 261 matching lines @@
     // Call the media feature evaluation function. Assume no prefix and let
     // trampoline functions override the prefix if prefix is used.
     EvalFunc func = gFunctionMap->get(expr->mediaFeature().impl());
     if (func)
         return func(expr->expValue(), NoPrefix, *m_mediaValues);
 
     return false;
 }
 
 } // namespace