Use null for default value of event handler attributes in XMLHttpRequest....

third_party/WebKit/WebCore/bindings/v8/custom/V8XMLHttpRequestCustom.cpp

 /*
  * Copyright (C) 2008, 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 50 matching lines @@
 
 ACCESSOR_GETTER(XMLHttpRequestOnabort)
 {
     INC_STATS("DOM.XMLHttpRequest.onabort._get");
     XMLHttpRequest* xmlHttpRequest = V8Proxy::ToNativeObject<XMLHttpRequest>(V8ClassIndex::XMLHTTPREQUEST, info.Holder());
     if (xmlHttpRequest->onabort()) {
         V8ObjectEventListener* listener = static_cast<V8ObjectEventListener*>(xmlHttpRequest->onabort());
         v8::Local<v8::Object> v8Listener = listener->getListenerObject();
         return v8Listener;
     }
-    return v8::Undefined();
+    return v8::Null();
 }
 
 ACCESSOR_SETTER(XMLHttpRequestOnabort)
 {
     INC_STATS("DOM.XMLHttpRequest.onabort._set");
     XMLHttpRequest* xmlHttpRequest = V8Proxy::ToNativeObject<XMLHttpRequest>(V8ClassIndex::XMLHTTPREQUEST, info.Holder());
     if (value->IsNull()) {
         if (xmlHttpRequest->onabort()) {
             V8ObjectEventListener* listener = static_cast<V8ObjectEventListener*>(xmlHttpRequest->onabort());
             v8::Local<v8::Object> v8Listener = listener->getListenerObject();
@@ skipping 13 matching lines @@
 
 ACCESSOR_GETTER(XMLHttpRequestOnerror)
 {
     INC_STATS("DOM.XMLHttpRequest.onerror._get");
     XMLHttpRequest* xmlHttpRequest = V8Proxy::ToNativeObject<XMLHttpRequest>(V8ClassIndex::XMLHTTPREQUEST, info.Holder());
     if (xmlHttpRequest->onerror()) {
         RefPtr<V8ObjectEventListener> listener = static_cast<V8ObjectEventListener*>(xmlHttpRequest->onerror());
         v8::Local<v8::Object> v8Listener = listener->getListenerObject();
         return v8Listener;
     }
-    return v8::Undefined();
+    return v8::Null();
 }
 
 ACCESSOR_SETTER(XMLHttpRequestOnerror)
 {
     INC_STATS("DOM.XMLHttpRequest.onerror._set");
     XMLHttpRequest* xmlHttpRequest = V8Proxy::ToNativeObject<XMLHttpRequest>(V8ClassIndex::XMLHTTPREQUEST, info.Holder());
     if (value->IsNull()) {
         if (xmlHttpRequest->onerror()) {
             V8ObjectEventListener* listener = static_cast<V8ObjectEventListener*>(xmlHttpRequest->onerror());
             v8::Local<v8::Object> v8Listener = listener->getListenerObject();
@@ skipping 13 matching lines @@
 
 ACCESSOR_GETTER(XMLHttpRequestOnload)
 {
     INC_STATS("DOM.XMLHttpRequest.onload._get");
     XMLHttpRequest* xmlHttpRequest = V8Proxy::ToNativeObject<XMLHttpRequest>(V8ClassIndex::XMLHTTPREQUEST, info.Holder());
     if (xmlHttpRequest->onload()) {
         V8ObjectEventListener* listener = static_cast<V8ObjectEventListener*>(xmlHttpRequest->onload());
         v8::Local<v8::Object> v8Listener = listener->getListenerObject();
         return v8Listener;
     }
-    return v8::Undefined();
+    return v8::Null();
 }
 
 ACCESSOR_SETTER(XMLHttpRequestOnload)
 {
     INC_STATS("DOM.XMLHttpRequest.onload._set");
     XMLHttpRequest* xmlHttpRequest = V8Proxy::ToNativeObject<XMLHttpRequest>(V8ClassIndex::XMLHTTPREQUEST, info.Holder());
     if (value->IsNull()) {
         if (xmlHttpRequest->onload()) {
             V8ObjectEventListener* listener = static_cast<V8ObjectEventListener*>(xmlHttpRequest->onload());
             v8::Local<v8::Object> v8Listener = listener->getListenerObject();
@@ skipping 13 matching lines @@
 
 ACCESSOR_GETTER(XMLHttpRequestOnloadstart)
 {
     INC_STATS("DOM.XMLHttpRequest.onloadstart._get");
     XMLHttpRequest* xmlHttpRequest = V8Proxy::ToNativeObject<XMLHttpRequest>(V8ClassIndex::XMLHTTPREQUEST, info.Holder());
     if (xmlHttpRequest->onloadstart()) {
         V8ObjectEventListener* listener = static_cast<V8ObjectEventListener*>(xmlHttpRequest->onloadstart());
         v8::Local<v8::Object> v8Listener = listener->getListenerObject();
         return v8Listener;
     }
-    return v8::Undefined();
+    return v8::Null();
 }
 
 ACCESSOR_SETTER(XMLHttpRequestOnloadstart)
 {
     INC_STATS("DOM.XMLHttpRequest.onloadstart._set");
     XMLHttpRequest* xmlHttpRequest = V8Proxy::ToNativeObject<XMLHttpRequest>(V8ClassIndex::XMLHTTPREQUEST, info.Holder());
     if (value->IsNull()) {
         if (xmlHttpRequest->onloadstart()) {
             V8ObjectEventListener* listener = static_cast<V8ObjectEventListener*>(xmlHttpRequest->onloadstart());
             v8::Local<v8::Object> v8Listener = listener->getListenerObject();
@@ skipping 13 matching lines @@
 
 ACCESSOR_GETTER(XMLHttpRequestOnprogress)
 {
     INC_STATS("DOM.XMLHttpRequest.onprogress._get");
     XMLHttpRequest* xmlHttpRequest = V8Proxy::ToNativeObject<XMLHttpRequest>(V8ClassIndex::XMLHTTPREQUEST, info.Holder());
     if (xmlHttpRequest->onprogress()) {
         V8ObjectEventListener* listener = static_cast<V8ObjectEventListener*>(xmlHttpRequest->onprogress());
         v8::Local<v8::Object> v8Listener = listener->getListenerObject();
         return v8Listener;
     }
-    return v8::Undefined();
+    return v8::Null();
 }
 
 ACCESSOR_SETTER(XMLHttpRequestOnprogress)
 {
     INC_STATS("DOM.XMLHttpRequest.onprogress._set");
     XMLHttpRequest* xmlHttpRequest = V8Proxy::ToNativeObject<XMLHttpRequest>(V8ClassIndex::XMLHTTPREQUEST, info.Holder());
     if (value->IsNull()) {
         if (xmlHttpRequest->onprogress()) {
             V8ObjectEventListener* listener = static_cast<V8ObjectEventListener*>(xmlHttpRequest->onprogress());
             v8::Local<v8::Object> v8Listener = listener->getListenerObject();
@@ skipping 13 matching lines @@
 
 ACCESSOR_GETTER(XMLHttpRequestOnreadystatechange)
 {
     INC_STATS("DOM.XMLHttpRequest.onreadystatechange._get");
     XMLHttpRequest* xmlHttpRequest = V8Proxy::ToNativeObject<XMLHttpRequest>(V8ClassIndex::XMLHTTPREQUEST, info.Holder());
     if (xmlHttpRequest->onreadystatechange()) {
         V8ObjectEventListener* listener = static_cast<V8ObjectEventListener*>(xmlHttpRequest->onreadystatechange());
         v8::Local<v8::Object> v8Listener = listener->getListenerObject();
         return v8Listener;
     }
-    return v8::Undefined();
+    return v8::Null();
 }
 
 ACCESSOR_SETTER(XMLHttpRequestOnreadystatechange)
 {
     INC_STATS("DOM.XMLHttpRequest.onreadystatechange._set");
     XMLHttpRequest* xmlHttpRequest = V8Proxy::ToNativeObject<XMLHttpRequest>(V8ClassIndex::XMLHTTPREQUEST, info.Holder());
     if (value->IsNull()) {
         if (xmlHttpRequest->onreadystatechange()) {
             V8ObjectEventListener* listener = static_cast<V8ObjectEventListener*>(xmlHttpRequest->onreadystatechange());
             v8::Local<v8::Object> v8Listener = listener->getListenerObject();
@@ skipping 173 matching lines @@
     xmlHttpRequest->overrideMimeType(value);
     return v8::Undefined();
 }
 
 CALLBACK_FUNC_DECL(XMLHttpRequestDispatchEvent)
 {
     INC_STATS("DOM.XMLHttpRequest.dispatchEvent()");
     return v8::Undefined();
 }
 
-} // namespace WebCore
+} // namespace WebCore