Fix use of itertools.groupby when collecting origin trial members

third_party/WebKit/Source/bindings/scripts/v8_interface.py

 # Copyright (C) 2013 Google Inc. All rights reserved.
 # coding=utf-8
 #
 # 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
@@ skipping 98 matching lines @@
 
     # Collect all members visible on this interface with a defined origin trial
     origin_trial_members = (
         [constant for constant in constants if constant['origin_trial_feature_name']] +
         [attribute for attribute in attributes if attribute['origin_trial_feature_name']] +
         [method for method in methods if (
             v8_methods.method_is_visible(method, interface.is_partial) and
             method['origin_trial_feature_name'])]
     )
     # Group members by origin_trial_feature_name
-    members_by_name = itertools.groupby(origin_trial_members, itemgetter('origin_trial_feature_name'))
+    members_by_name = itertools.groupby(sorted(origin_trial_members,
+                                               key=itemgetter('origin_trial_feature_name')),
+                                        itemgetter('origin_trial_feature_name'))
     # Construct the list of dictionaries. 'needs_instance' will be true if any
     # member for the feature has 'on_instance' defined as true.
     features = [{'name': name,
                  'needs_instance': reduce(or_, (member.get('on_instance', False)
                                                 for member in members))}
                 for name, members in members_by_name]
     if features:
         includes.add('bindings/core/v8/ScriptState.h')
         includes.add('core/origin_trials/OriginTrials.h')
     return sorted(features)
@@ skipping 1254 matching lines @@
     extended_attributes = deleter.extended_attributes
     is_call_with_script_state = v8_utilities.has_extended_attribute_value(deleter, 'CallWith', 'ScriptState')
     is_ce_reactions = 'CEReactions' in extended_attributes
     return {
         'is_call_with_script_state': is_call_with_script_state,
         'is_ce_reactions': is_ce_reactions,
         'is_custom': 'Custom' in extended_attributes,
         'is_raises_exception': 'RaisesException' in extended_attributes,
         'name': cpp_name(deleter),
     }