Introduce CSS_VALUE_TYPE_CASTS macro to cast CSSValue

Source/core/css/resolver/StyleBuilderCustom.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
@@ skipping 1193 matching lines @@
 {
     if (value->isPrimitiveValue()) {
         CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value);
         return primitiveValue->hasVariableReference();
     }
 
     if (value->isCalculationValue())
         return static_cast<CSSCalcValue*>(value)->hasVariableReference();
 
     if (value->isReflectValue()) {
-        CSSReflectValue* reflectValue = static_cast<CSSReflectValue*>(value);
+        CSSReflectValue* reflectValue = toCSSReflectValue(value);
         CSSPrimitiveValue* direction = reflectValue->direction();
         CSSPrimitiveValue* offset = reflectValue->offset();
         CSSValue* mask = reflectValue->mask();
         return (direction && hasVariableReference(direction)) || (offset && hasVariableReference(offset)) || (mask && hasVariableReference(mask));
     }
 
     for (CSSValueListIterator i = value; i.hasMore(); i.advance()) {
         if (hasVariableReference(i.value()))
             return true;
     }
@@ skipping 100 matching lines @@
             bool didSet = false;
             for (CSSValueListIterator i = value; i.hasMore(); i.advance()) {
                 CSSValue* item = i.value();
                 if (item->isImageGeneratorValue()) {
                     if (item->isGradientValue())
                         state.style()->setContent(StyleGeneratedImage::create(static_cast<CSSGradientValue*>(item)->gradientWithStylesResolved(state.document().textLinkColors(), state.style()->color()).get()), didSet);
                     else
                         state.style()->setContent(StyleGeneratedImage::create(static_cast<CSSImageGeneratorValue*>(item)), didSet);
                     didSet = true;
                 } else if (item->isImageSetValue()) {
-                    state.style()->setContent(state.elementStyleResources().setOrPendingFromValue(CSSPropertyContent, static_cast<CSSImageSetValue*>(item)), didSet);
+                    state.style()->setContent(state.elementStyleResources().setOrPendingFromValue(CSSPropertyContent, toCSSImageSetValue(item)), didSet);
                     didSet = true;
                 }
 
                 if (item->isImageValue()) {
                     state.style()->setContent(state.elementStyleResources().cachedOrPendingFromValue(CSSPropertyContent, toCSSImageValue(item)), didSet);
                     didSet = true;
                     continue;
                 }
 
                 if (!item->isPrimitiveValue())
@@ skipping 181 matching lines @@
     case CSSPropertyWebkitBoxReflect: {
         HANDLE_INHERIT_AND_INITIAL(boxReflect, BoxReflect)
         if (primitiveValue) {
             state.style()->setBoxReflect(RenderStyle::initialBoxReflect());
             return;
         }
 
         if (!value->isReflectValue())
             return;
 
-        CSSReflectValue* reflectValue = static_cast<CSSReflectValue*>(value);
+        CSSReflectValue* reflectValue = toCSSReflectValue(value);
         RefPtr<StyleReflection> reflection = StyleReflection::create();
         reflection->setDirection(*reflectValue->direction());
         if (reflectValue->offset())
             reflection->setOffset(reflectValue->offset()->convertToLength<FixedIntegerConversion | PercentConversion>(state.style(), state.rootElementStyle(), zoomFactor));
         NinePieceImage mask;
         mask.setMaskDefaults();
         state.styleMap().mapNinePieceImage(state.style(), id, reflectValue->mask(), mask);
         reflection->setMask(mask);
 
         state.style()->setBoxReflect(reflection.release());
@@ skipping 848 matching lines @@
         break;
     }
     case CSSPropertyEnableBackground:
         // Silently ignoring this property for now
         // http://bugs.webkit.org/show_bug.cgi?id=6022
         break;
     }
 }
 
 } // namespace WebCore