CSS Transforms: Implement transform-style

Source/core/css/CSSComputedStyleDeclaration.cpp

Index: Source/core/css/CSSComputedStyleDeclaration.cpp
diff --git a/Source/core/css/CSSComputedStyleDeclaration.cpp b/Source/core/css/CSSComputedStyleDeclaration.cpp
index 97cd5389a0127b63fd3e23e1c68a543fb99fd5a4..075537e09f8f55dc17828fb907a0e05b5492fb53 100644
--- a/Source/core/css/CSSComputedStyleDeclaration.cpp
+++ b/Source/core/css/CSSComputedStyleDeclaration.cpp
@@ -316,6 +316,7 @@ static const CSSPropertyID staticComputableProperties[] = {
     CSSPropertyWebkitTextStrokeWidth,
     CSSPropertyWebkitTransform,
     CSSPropertyWebkitTransformOrigin,
+    CSSPropertyTransformStyle,
     CSSPropertyWebkitTransformStyle,
     CSSPropertyWebkitTransitionDelay,
     CSSPropertyWebkitTransitionDuration,
@@ -2569,6 +2570,7 @@ PassRefPtrWillBeRawPtr<CSSValue> CSSComputedStyleDeclaration::getPropertyCSSValu
             }
             return list.release();
         }
+        case CSSPropertyTransformStyle:
         case CSSPropertyWebkitTransformStyle:
             return cssValuePool().createIdentifierValue((style->transformStyle3D() == TransformStyle3DPreserve3D) ? CSSValuePreserve3d : CSSValueFlat);
         case CSSPropertyTransitionDelay:
@@ -2768,7 +2770,6 @@ PassRefPtrWillBeRawPtr<CSSValue> CSSComputedStyleDeclaration::getPropertyCSSValu
         case CSSPropertyPerspectiveOrigin:
         case CSSPropertyTransform:
         case CSSPropertyTransformOrigin:
-        case CSSPropertyTransformStyle:
             break;
 
         /* Unimplemented @font-face properties */