Dart: Fix conversion of identifiers to lowerCamelCase.

mojo/public/interfaces/bindings/tests/regression_tests.mojom

 // Copyright 2014 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.
 
 // Module containing entities for regression tests of the generator. Entities
 // must never be modified, instead new entity must be added to add new tests.
 [DartPackage="_mojo_for_test_only", JavaPackage="org.chromium.mojo.bindings.test.mojom.regression_tests"]
 module regression_tests;
 
 interface CheckMethodWithEmptyResponse {
@@ skipping 77 matching lines @@
   array<NormalEnum> array_of_enums;
 };
 
 interface Regression551 {
   Get(array<string> key_prefixes) => (int32 result);
 };
 
 interface ServiceName {
   serviceName() => (string serviceName);
 };
+
+enum CamelCaseTestEnum {
+  BOOL_THING,
+  DOUBLE_THING,
+  FLOAT_THING,
+  INT8_THING,
+  INT16THING,
+  INT32_TH1NG,
+  INT64_Th1ng,
+  UINT8T_h1ng,
+  UINT16t_h1NG,
+  UINT32_TH1ng,
+  UINT64_TH1NG
+};