Make Dictionary::toV8Impl return v8::Undefined()

third_party/WebKit/Source/bindings/templates/dictionary_v8.cpp

 {% filter format_blink_cpp_source_code %}
 
 {% from 'utilities.cpp' import declare_enum_validation_variable %}
 {% include 'copyright_block.txt' %}
 #include "{{v8_original_class}}.h"
 
 {% for filename in cpp_includes if filename != '%s.h' % v8_class %}
 #include "{{filename}}"
 {% endfor %}
 
@@ skipping 76 matching lines @@
     }
     {% endfilter %}
 
     {% endfor %}
 }
 
 v8::Local<v8::Value> {{cpp_class}}::toV8Impl(v8::Local<v8::Object> creationContext, v8::Isolate* isolate) const
 {
     v8::Local<v8::Object> v8Object = v8::Object::New(isolate);
     if (!toV8{{cpp_class}}(*this, v8Object, creationContext, isolate))
-        return v8::Local<v8::Value>();
+        return v8::Undefined(isolate);
     return v8Object;
 }
 
 bool toV8{{cpp_class}}(const {{cpp_class}}& impl, v8::Local<v8::Object> dictionary, v8::Local<v8::Object> creationContext, v8::Isolate* isolate)
 {
     {% if parent_v8_class %}
     if (!toV8{{parent_cpp_class}}(impl, dictionary, creationContext, isolate))
         return false;
 
     {% endif %}
@@ skipping 25 matching lines @@
 {{cpp_class}} NativeValueTraits<{{cpp_class}}>::nativeValue(v8::Isolate* isolate, v8::Local<v8::Value> value, ExceptionState& exceptionState)
 {
     {{cpp_class}} impl;
     {{v8_class}}::toImpl(isolate, value, impl, exceptionState);
     return impl;
 }
 
 } // namespace blink
 
 {% endfilter %}{# format_blink_cpp_source_code #}