CSSMutableStyleDeclarationImpl *CSSComputedStyleDeclarationImpl::copy() const
{
    return copyPropertiesInSet(computedProperties, numComputedProperties);
}
PassRefPtr<CSSMutableStyleDeclaration> CSSMutableStyleDeclaration::copyBlockProperties() const
{
    return copyPropertiesInSet(blockProperties, numBlockProperties);
}
CSSMutableStyleDeclarationImpl *CSSComputedStyleDeclarationImpl::copyInheritableProperties() const
{
    return copyPropertiesInSet(inheritableProperties, numInheritableProperties);
}