IDL: Generate union type containers

Source/bindings/scripts/compute_interfaces_info_overall.py

Index: Source/bindings/scripts/compute_interfaces_info_overall.py
diff --git a/Source/bindings/scripts/compute_interfaces_info_overall.py b/Source/bindings/scripts/compute_interfaces_info_overall.py
index 912d8db4545e7c7aa6291148f9dc266d0250832b..cd5d89a1f6b1303107ddb1d4f3210136bb8714d7 100755
--- a/Source/bindings/scripts/compute_interfaces_info_overall.py
+++ b/Source/bindings/scripts/compute_interfaces_info_overall.py
@@ -296,6 +296,10 @@ def compute_interfaces_info_overall(info_individuals):
             else:
                 dependencies_other_component_include_paths.append(include_path)
 
+        if interface_info['has_union_types']:
+            dependencies_include_paths.append(
+                'bindings/%s/v8/UnionTypes%s.h' % (component, component.capitalize()))
+
         interface_info.update({
             'dependencies_full_paths': dependencies_full_paths,
             'dependencies_include_paths': dependencies_include_paths,
@@ -308,6 +312,7 @@ def compute_interfaces_info_overall(info_individuals):
     # Clean up temporary private information
     for interface_info in interfaces_info.itervalues():
         del interface_info['extended_attributes']
+        del interface_info['has_union_types']
         del interface_info['is_legacy_treat_as_partial_interface']
         del interface_info['parent']