Require an explicit ServiceName annotation for interfaces in C++.

mojo/public/tools/bindings/pylib/mojom/generate/data.py

 # Copyright 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # TODO(vtl): "data" is a pretty vague name. Rename it?
 
 import copy
 
 import module as mojom
 
@@ skipping 340 matching lines @@
   interface.name = data['name']
   interface.spec = 'x:' + module.namespace + '.' + interface.name
   module.kinds[interface.spec] = interface
   interface.enums = map(lambda enum:
       EnumFromData(module, enum, interface), data['enums'])
   interface.constants = map(lambda constant:
       ConstantFromData(module, constant, interface), data['constants'])
   # Stash methods data here temporarily.
   interface.methods_data = data['methods']
   interface.attributes = data.get('attributes')
+  interface.service_name = None
+  if interface.attributes:
+    interface.service_name = interface.attributes.get('ServiceName')
   return interface
 
 def EnumFieldFromData(module, enum, data, parent_kind):
   field = mojom.EnumField()
   field.name = data['name']
   # TODO(mpcomplete): FixupExpression should be done in the second pass,
   # so constants and enums can refer to each other.
   # TODO(mpcomplete): But then, what if constants are initialized to an enum? Or
   # vice versa?
   if parent_kind:
@@ skipping 134 matching lines @@
 
 def OrderedModuleFromData(data):
   module = ModuleFromData(data)
   for interface in module.interfaces:
     next_ordinal = 0
     for method in interface.methods:
       if method.ordinal is None:
         method.ordinal = next_ordinal
       next_ordinal = method.ordinal + 1
   return module