Stop using WebCore namespace in generated code

Source/build/scripts/templates/StyleBuilderFunctions.h.tmpl

 {% from 'macros.tmpl' import license %}
 {{license()}}
 
 #ifndef StyleBuilderFunctions_h
 #define StyleBuilderFunctions_h
 
 #include "core/css/resolver/StyleBuilderConverter.h"
 
-namespace WebCore {
+namespace blink {
 
 class CSSValue;
 class StyleResolverState;
 
 class StyleBuilderFunctions {
 public:
 
     {% for property_id, property in properties.items()
            if property.should_declare_functions %}
     static void applyInitial{{property_id}}(StyleResolverState&);
     static void applyInherit{{property_id}}(StyleResolverState&);
     static void applyValue{{property_id}}(StyleResolverState&, CSSValue*);
 
     {% endfor %}
 };
 
-} // namespace WebCore
+} // namespace blink
 
 #endif