bindings: Use CreateDataProperty() instead of ForceSet()

Source/bindings/templates/interface_base.cpp

 {% include 'copyright_block.txt' %}
 #include "config.h"
 {% filter conditional(conditional_string) %}
 #include "{{v8_class_or_partial}}.h"
 
 {% for filename in cpp_includes if filename != '%s.h' % cpp_class_or_partial %}
 #include "{{filename}}"
 {% endfor %}
 
 namespace blink {
@@ skipping 30 matching lines @@
 {# Constants #}
 {% from 'constants.cpp' import constant_getter_callback
        with context %}
 {% for constant in special_getter_constants %}
 {{constant_getter_callback(constant)}}
 {% endfor %}
 {# Attributes #}
 {% block replaceable_attribute_setter_and_callback %}
 {% if has_replaceable_attributes or has_constructor_attributes %}
 template<class CallbackInfo>
-static void {{cpp_class}}ForceSetAttributeOnThis(v8::Local<v8::Name> name, v8::Local<v8::Value> v8Value, const CallbackInfo& info)
+static bool {{cpp_class}}CreateDataProperty(v8::Local<v8::Name> name, v8::Local<v8::Value> v8Value, const CallbackInfo& info)
 {
     {% if is_check_security %}
     {{cpp_class}}* impl = {{v8_class}}::toImpl(info.Holder());
     v8::String::Utf8Value attributeName(name);
     ExceptionState exceptionState(ExceptionState::SetterContext, *attributeName, "{{interface_name}}", info.Holder(), info.GetIsolate());
     if (!BindingSecurity::shouldAllowAccessToFrame(info.GetIsolate(), impl->frame(), exceptionState)) {
         exceptionState.throwIfNeeded();
-        return;
+        return false;
     }
     {% endif %}
     ASSERT(info.This()->IsObject());
-    v8::Local<v8::Object>::Cast(info.This())->ForceSet(info.GetIsolate()->GetCurrentContext(), name, v8Value);
+    return v8CallBoolean(v8::Local<v8::Object>::Cast(info.This())->CreateDataProperty(info.GetIsolate()->GetCurrentContext(), name, v8Value));
 }
 
 {% if has_constructor_attributes %}
 static void {{cpp_class}}ConstructorAttributeSetterCallback(v8::Local<v8::Name>, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMSetter");
     do {
         v8::Local<v8::Value> data = info.Data();
         ASSERT(data->IsExternal());
         V8PerContextData* perContextData = V8PerContextData::from(info.Holder()->CreationContext());
         if (!perContextData)
             break;
         const WrapperTypeInfo* wrapperTypeInfo = WrapperTypeInfo::unwrap(data);
         if (!wrapperTypeInfo)
             break;
-        {{cpp_class}}ForceSetAttributeOnThis(v8String(info.GetIsolate(), wrapperTypeInfo->interfaceName), v8Value, info);
+        {{cpp_class}}CreateDataProperty(v8String(info.GetIsolate(), wrapperTypeInfo->interfaceName), v8Value, info);
     } while (false); // do ... while (false) just for use of break
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 {% endif %}
 {% endif %}
 {% endblock %}
 {##############################################################################}
 {% from 'attributes.cpp' import constructor_getter_callback,
        attribute_getter, attribute_getter_callback,
@@ skipping 403 matching lines @@
 {% endfor %}
 {% for attribute in attributes if attribute.is_implemented_in_private_script %}
 {{attribute_getter_implemented_in_private_script(attribute)}}
 {% if attribute.has_setter %}
 {{attribute_setter_implemented_in_private_script(attribute)}}
 {% endif %}
 {% endfor %}
 {% block partial_interface %}{% endblock %}
 } // namespace blink
 {% endfilter %}