A patch for http://crbug.com/17400...

bindings/scripts/CodeGeneratorV8.pm

Index: bindings/scripts/CodeGeneratorV8.pm
===================================================================
--- bindings/scripts/CodeGeneratorV8.pm	(revision 46639)
+++ bindings/scripts/CodeGeneratorV8.pm	(working copy)
@@ -334,13 +334,14 @@
     return $result;
 }
 
-sub IsNodeSubType
+sub IsSubTypeOf
 {
     my $dataNode = shift;
-    return 1 if ($dataNode->name eq "Node");
+    my $superType = shift;
+    return 1 if ($dataNode->name eq $superType);
     foreach (@allParents) {
         my $parent = $codeGenerator->StripModule($_);
-        return 1 if $parent eq "Node";
+        return 1 if $parent eq $superType;
     }
     return 0;
 }
@@ -351,7 +352,7 @@
     my $implClassName = shift;
     my $classIndex = shift;
 
-    if (IsNodeSubType($dataNode)) {
+    if (IsSubTypeOf($dataNode, "Node")) {
         push(@implContentDecls, <<END);
     $implClassName* imp = V8DOMWrapper::convertDOMWrapperToNode<$implClassName>(holder);
 END
@@ -960,8 +961,8 @@
                 $getter = "V8Custom::v8DOMWindowEventHandlerAccessorGetter";
                 $setter = "V8Custom::v8DOMWindowEventHandlerAccessorSetter";
             } elsif ($interfaceName eq "Element" || $interfaceName eq "Document" || $interfaceName eq "HTMLBodyElement" || $interfaceName eq "SVGElementInstance" || $interfaceName eq "HTMLFrameSetElement") {
-                $getter = "V8Custom::v8ElementEventHandlerAccessorGetter";
-                $setter = "V8Custom::v8ElementEventHandlerAccessorSetter";
+                $getter = "V8Custom::v8NodeEventHandlerAccessorGetter";
+                $setter = "V8Custom::v8NodeEventHandlerAccessorSetter";
             } else {
                 $getter = "V8Custom::v8${customAccessor}AccessorGetter";
                 if ($interfaceName eq "WorkerContext" and $attrName eq "self") {
@@ -1239,7 +1240,18 @@
     push(@implContent,  <<END);
 static v8::Persistent<v8::FunctionTemplate> Configure${className}Template(v8::Persistent<v8::FunctionTemplate> desc) {
   v8::Local<v8::ObjectTemplate> instance = desc->InstanceTemplate();
-  instance->SetInternalFieldCount(2);
+END
+    if (IsSubTypeOf($dataNode, "Node")) {
+        push(@implContent, <<END);
+  instance->SetInternalFieldCount(V8Custom::kNodeMinimumInternalFieldCount);
+END
+    } else {
+        push(@implContent, <<END);
+  instance->SetInternalFieldCount(V8Custom::kDefaultWrapperInternalFieldCount);
+END
+    }
+
+    push(@implContent,  <<END);
   v8::Local<v8::Signature> default_signature = v8::Signature::New(desc);
   v8::Local<v8::ObjectTemplate> proto = desc->PrototypeTemplate();
   $access_check