Generate toCSSFooValue() for CSSAspectRatioValue, CSSBorderImageSliceValue

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 154 matching lines @@
         return a <= b;
     case NoPrefix:
         return a == b;
     }
     return false;
 }
 
 static bool compareAspectRatioValue(CSSValue* value, int width, int height, MediaFeaturePrefix op)
 {
     if (value->isAspectRatioValue()) {
-        CSSAspectRatioValue* aspectRatio = static_cast<CSSAspectRatioValue*>(value);
+        CSSAspectRatioValue* aspectRatio = toCSSAspectRatioValue(value);
         return compareValue(width * static_cast<int>(aspectRatio->denominatorValue()), height * static_cast<int>(aspectRatio->numeratorValue()), op);
     }
 
     return false;
 }
 
 static bool numberValue(CSSValue* value, float& result)
 {
     if (value->isPrimitiveValue()
         && toCSSPrimitiveValue(value)->isNumber()) {
@@ skipping 498 matching lines @@
     // and let trampoline functions override the prefix if prefix is
     // used
     EvalFunc func = gFunctionMap->get(expr->mediaFeature().impl());
     if (func)
         return func(expr->value(), m_style.get(), m_frame, NoPrefix);
 
     return false;
 }
 
 } // namespace