Mojo: Support enums as map keys in WTF

mojo/public/tools/bindings/pylib/mojom/generate/module.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.
 
 # This module's classes provide an interface to mojo modules. Modules are
 # collections of interfaces and structs to be used by mojo ipc clients and
 # servers.
 #
 # A simple interface would be created this way:
 # module = mojom.generate.module.Module('Foo')
@@ skipping 285 matching lines @@
 class Struct(ReferenceKind):
   """A struct with typed fields.
 
   Attributes:
     name: {str} The name of the struct type.
     native_only: {bool} Does the struct have a body (i.e. any fields) or is it
         purely a native struct.
     module: {Module} The defining module.
     imported_from: {dict} Information about where this union was
         imported from.
-    fields: {List[StructField]} The members of the union.
+    fields: {List[StructField]} The members of the struct.
     attributes: {dict} Additional information about the struct, such as
         if it's a native struct.
   """
 
   ReferenceKind.AddSharedProperty('name')
   ReferenceKind.AddSharedProperty('native_only')
   ReferenceKind.AddSharedProperty('module')
   ReferenceKind.AddSharedProperty('imported_from')
   ReferenceKind.AddSharedProperty('fields')
   ReferenceKind.AddSharedProperty('attributes')
@@ skipping 565 matching lines @@
       return True
     elif IsAnyInterfaceKind(kind):
       return True
     elif IsArrayKind(kind):
       return Check(kind.kind)
     elif IsMapKind(kind):
       return Check(kind.key_kind) or Check(kind.value_kind)
     else:
       return False
   return Check(kind)