[Binding] Remove signature from domAttribute

Source/bindings/scripts/generate-bindings.pl

Index: Source/bindings/scripts/generate-bindings.pl
diff --git a/Source/bindings/scripts/generate-bindings.pl b/Source/bindings/scripts/generate-bindings.pl
index 95d73fb0634299c32bdbc80c8296f6c4561bd757..6f8a58edbfaf7f7898513a6e1808f501e89599b8 100755
--- a/Source/bindings/scripts/generate-bindings.pl
+++ b/Source/bindings/scripts/generate-bindings.pl
@@ -147,11 +147,11 @@ foreach my $idlFile (@supplementedIdlFiles) {
             # Support for attributes of partial interfaces.
             foreach my $attribute (@{$interface->attributes}) {
                 # Record that this attribute is implemented by $interfaceName.
-                $attribute->signature->extendedAttributes->{"ImplementedBy"} = $interfaceName;
+                $attribute->extendedAttributes->{"ImplementedBy"} = $interfaceName;
 
                 # Add interface-wide extended attributes to each attribute.
                 foreach my $extendedAttributeName (keys %{$interface->extendedAttributes}) {
-                    $attribute->signature->extendedAttributes->{$extendedAttributeName} = $interface->extendedAttributes->{$extendedAttributeName};
+                    $attribute->extendedAttributes->{$extendedAttributeName} = $interface->extendedAttributes->{$extendedAttributeName};
                 }
                 push(@{$targetDataNode->attributes}, $attribute);
             }
@@ -263,7 +263,7 @@ sub checkIDLAttributes
         checkIfIDLAttributesExists($idlAttributes, $interface->extendedAttributes, $idlFile);
 
         foreach my $attribute (@{$interface->attributes}) {
-            checkIfIDLAttributesExists($idlAttributes, $attribute->signature->extendedAttributes, $idlFile);
+            checkIfIDLAttributesExists($idlAttributes, $attribute->extendedAttributes, $idlFile);
         }
 
         foreach my $function (@{$interface->functions}) {