Move viewport unit resolution to style recalc time

Source/core/css/MediaQueryEvaluator.cpp

Index: Source/core/css/MediaQueryEvaluator.cpp
diff --git a/Source/core/css/MediaQueryEvaluator.cpp b/Source/core/css/MediaQueryEvaluator.cpp
index e4154aeb590342538b83553f3b48f6ac4c057576..d4d95f662ce2082e546e7bd7862f7330e49c617c 100644
--- a/Source/core/css/MediaQueryEvaluator.cpp
+++ b/Source/core/css/MediaQueryEvaluator.cpp
@@ -348,7 +348,8 @@ static bool computeLength(CSSValue* value, bool strict, RenderStyle* initialStyl
     if (primitiveValue->isLength()) {
         // Relative (like EM) and root relative (like REM) units are always resolved against the initial values
         // for media queries, hence the two initialStyle parameters.
-        result = primitiveValue->computeLength<int>(CSSToLengthConversionData(initialStyle, initialStyle, 1.0 /* zoom */, true /* computingFontSize */));
+        // FIXME: We need to plumb viewport units down to here.
+        result = primitiveValue->computeLength<int>(CSSToLengthConversionData(initialStyle, initialStyle, 0, 1.0 /* zoom */, true /* computingFontSize */));
         return true;
     }