IDL compiler: [CustomLegacyCall] interfaces, cleanup header conditional spacing

Source/bindings/scripts/unstable/v8_interface.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 58 matching lines @@
 
     is_check_security = 'CheckSecurity' in extended_attributes
     if is_check_security:
         includes.update(['bindings/v8/BindingSecurity.h',
                          'bindings/v8/ExceptionMessages.h',
                          'bindings/v8/ExceptionState.h'])
 
     template_contents = {
         'conditional_string': conditional_string(interface),  # [Conditional]
         'cpp_class_name': cpp_name(interface),
+        'has_custom_legacy_call': 'CustomLegacyCall' in extended_attributes,  # [CustomLegacyCall]
         'has_resolve_wrapper_reachability': 'CustomIsReachable' in extended_attributes,  # [CustomIsReachable]
         'header_includes': INTERFACE_H_INCLUDES,
         'interface_name': interface.name,
         'is_active_dom_object': 'ActiveDOMObject' in extended_attributes,  # [ActiveDOMObject]
         'is_check_security': is_check_security,
         'is_dependent_lifetime': 'DependentLifetime' in extended_attributes,  # [DependentLifetime]
         'v8_class_name': v8_class_name,
     }
 
     template_contents.update({
@@ skipping 149 matching lines @@
                             '%s->IsString()' % cpp_value,
                             '%s->IsObject()' % cpp_value])
     if v8_types.array_or_sequence_type(idl_type):
         return '%s->IsArray()' % cpp_value
     if v8_types.is_wrapper_type(idl_type):
         type_check = 'V8{idl_type}::hasInstance({cpp_value}, info.GetIsolate(), worldType(info.GetIsolate()))'.format(idl_type=idl_type, cpp_value=cpp_value)
         if argument['is_nullable']:
             type_check = ' || '.join(['%s->IsNull()' % cpp_value, type_check])
         return type_check
     return None