Bindings: inherit enums and callbacks from partial interface files.

Source/bindings/scripts/idl_definitions.py

 # Copyright (C) 2013 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 # copyright notice, this list of conditions and the following disclaimer
@@ skipping 146 matching lines @@
                 continue
 
             # Merge partial to existing interface
             try:
                 self.interfaces[interface_name].merge(new_interface)
             except KeyError:
                 raise Exception('Tried to merge partial interface for {0}, '
                                 'but no existing interface by that name'
                                 .format(interface_name))
 
+            # Merge callbacks and enumerations
+            self.enumerations.update(other.enumerations)
+            self.callback_functions.update(other.callback_functions)
+
 
 ################################################################################
 # Callback Functions
 ################################################################################
 
 class IdlCallbackFunction(TypedObject):
     def __init__(self, node):
         children = node.GetChildren()
         num_children = len(children)
         if num_children != 2:
@@ skipping 465 matching lines @@
     child_class = child.GetClass()
     if child_class != 'Type':
         raise ValueError('Unrecognized node class: %s' % child_class)
     return type_node_to_type(child)
 
 
 def union_type_node_to_idl_union_type(node, is_nullable=False):
     member_types = [type_node_to_type(member_type_node)
                     for member_type_node in node.GetChildren()]
     return IdlUnionType(member_types, is_nullable=is_nullable)