Move btoa() / atob() implementation out of DOMWindow

Source/bindings/scripts/deprecated_generate_bindings.pl

Index: Source/bindings/scripts/deprecated_generate_bindings.pl
diff --git a/Source/bindings/scripts/deprecated_generate_bindings.pl b/Source/bindings/scripts/deprecated_generate_bindings.pl
index 9e633db6f16014e1c9293630c3b94e170376d577..b61e23bf4ba2e162b08d3fbaf2d872ac74f3f50a 100755
--- a/Source/bindings/scripts/deprecated_generate_bindings.pl
+++ b/Source/bindings/scripts/deprecated_generate_bindings.pl
@@ -133,7 +133,7 @@ foreach my $idlFile (@dependencyIdlFiles) {
             # Support for attributes of partial interfaces.
             foreach my $attribute (@{$interface->attributes}) {
                 # Record that this attribute is implemented by $interfaceName.
-                $attribute->extendedAttributes->{"ImplementedBy"} = $interfaceName if $interface->isPartial;
+                $attribute->extendedAttributes->{"ImplementedBy"} = $interfaceName unless $interface->extendedAttributes->{"LegacyImplementedInBaseClass"};
 
                 # Add interface-wide extended attributes to each attribute.
                 applyInterfaceExtendedAttributes($interface, $attribute->extendedAttributes);
@@ -144,7 +144,7 @@ foreach my $idlFile (@dependencyIdlFiles) {
             # Support for methods of partial interfaces.
             foreach my $function (@{$interface->functions}) {
                 # Record that this method is implemented by $interfaceName.
-                $function->extendedAttributes->{"ImplementedBy"} = $interfaceName if $interface->isPartial;
+                $function->extendedAttributes->{"ImplementedBy"} = $interfaceName unless $interface->extendedAttributes->{"LegacyImplementedInBaseClass"};
 
                 # Add interface-wide extended attributes to each method.
                 applyInterfaceExtendedAttributes($interface, $function->extendedAttributes);
@@ -155,7 +155,7 @@ foreach my $idlFile (@dependencyIdlFiles) {
             # Support for constants of partial interfaces.
             foreach my $constant (@{$interface->constants}) {
                 # Record that this constant is implemented by $interfaceName.
-                $constant->extendedAttributes->{"ImplementedBy"} = $interfaceName if $interface->isPartial;
+                $constant->extendedAttributes->{"ImplementedBy"} = $interfaceName unless $interface->extendedAttributes->{"LegacyImplementedInBaseClass"};
 
                 # Add interface-wide extended attributes to each constant.
                 applyInterfaceExtendedAttributes($interface, $constant->extendedAttributes);