Implement Custom Elements' attributeChangedCallback.

Source/bindings/scripts/CodeGeneratorV8.pm

 # Copyright (C) 2005, 2006 Nikolas Zimmermann <zimmermann@kde.org>
 # Copyright (C) 2006 Anders Carlsson <andersca@mac.com>
 # Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
 # Copyright (C) 2006 Alexey Proskuryakov <ap@webkit.org>
 # Copyright (C) 2006 Apple Computer, Inc.
 # Copyright (C) 2007, 2008, 2009, 2012 Google Inc.
 # Copyright (C) 2009 Cameron McCormack <cam@mcc.id.au>
 # Copyright (C) Research In Motion Limited 2010. All rights reserved.
 # Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
 # Copyright (C) 2012 Ericsson AB. All rights reserved.
@@ skipping 1631 matching lines @@
 sub GenerateReplaceableAttrSetterCallback
 {
     my $interface = shift;
     my $implClassName = GetImplName($interface);
 
     my $code = "";
     $code .= "static void ${implClassName}ReplaceableAttrSetterCallback(v8::Local<v8::String> name, v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<void>& info)\n";
     $code .= "{\n";
     $code .= GenerateFeatureObservation($interface->extendedAttributes->{"MeasureAs"});
     $code .= GenerateDeprecationNotification($interface->extendedAttributes->{"DeprecateAs"});
+    $code .= GenerateCustomElementInvocationScopeIfNeeded($interface->extendedAttributes);
     if (HasActivityLogging("", $interface->extendedAttributes, "Setter")) {
          die "IDL error: ActivityLog attribute cannot exist on a ReplacableAttrSetterCallback";
     }
     $code .= "    ${implClassName}V8Internal::${implClassName}ReplaceableAttrSetter(name, value, info);\n";
     $code .= "}\n\n";
     $implementation{nameSpaceInternal}->add($code);
 }
 
 sub GenerateReplaceableAttrSetter
 {
@@ skipping 23 matching lines @@
 
 END
     $implementation{nameSpaceInternal}->add($code);
 }
 
 sub GenerateCustomElementInvocationScopeIfNeeded
 {
     my $code = "";
     my $ext = shift;
 
-    if ($ext->{"DeliverCustomElementCallbacks"}) {
-        if ($ext->{"Reflect"}) {
-            die "IDL error: [Reflect] and [DeliverCustomElementCallbacks] cannot coexist yet";
-        }
-
+    if ($ext->{"DeliverCustomElementCallbacks"} or $ext->{"Reflect"}) {
         AddToImplIncludes("core/dom/CustomElementCallbackDispatcher.h");
         $code .= <<END;
     CustomElementCallbackDispatcher::CallbackDeliveryScope deliveryScope;
 END
     }
     return $code;
 }
 
 sub GenerateNormalAttrSetterCallback
 {
@@ skipping 13 matching lines @@
     $code .= "static void ${attrName}AttrSetterCallback${forMainWorldSuffix}(v8::Local<v8::String> name, v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<void>& info)\n";
     $code .= "{\n";
     if (!$attrExt->{"PerWorldBindings"}) {
         $code .= "    TRACE_EVENT_SET_SAMPLING_STATE(\"Blink\", \"DOMMethod\");\n";
     }
     $code .= GenerateFeatureObservation($attrExt->{"MeasureAs"});
     $code .= GenerateDeprecationNotification($attrExt->{"DeprecateAs"});
     if (HasActivityLogging($forMainWorldSuffix, $attrExt, "Setter")) {
         $code .= GenerateActivityLogging("Setter", $interface, "${attrName}");
     }
+    $code .= GenerateCustomElementInvocationScopeIfNeeded($attrExt);
     if (HasCustomSetter($attrExt)) {
         $code .= "    ${v8ClassName}::${attrName}AttrSetterCustom(name, value, info);\n";
     } else {
         $code .= "    ${implClassName}V8Internal::${attrName}AttrSetter${forMainWorldSuffix}(name, value, info);\n";
     }
     if (!$attrExt->{"PerWorldBindings"}) {
         $code .= "    TRACE_EVENT_SET_SAMPLING_STATE(\"V8\", \"Execution\");\n";
     }
     $code .= "}\n\n";
     $code .= "#endif // ${conditionalString}\n\n" if $conditionalString;
@@ skipping 4286 matching lines @@
         if ($currentInterface->extendedAttributes->{$extendedAttribute}) {
             $found = 1;
         }
         return 1 if $found;
     }, 0);
 
     return $found;
 }
 
 1;