[Sync] Convert syncable/ directory to ModelEnumSet

chrome/chrome_tests.gypi

 # Copyright (c) 2011 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.
 {
   'variables' : {
     'pyautolib_sources': [
       'app/chrome_command_ids.h',
       'app/chrome_dll_resource.h',
       'common/automation_constants.h',
       'common/pref_names.cc',
@@ skipping 334 matching lines @@
         '../testing/gmock.gyp:gmock',
         '../testing/gtest.gyp:gtest',
         'sync',
       ],
       'include_dirs': [
         '..',
       ],
       'sources': [
         'browser/sync/js/js_test_util.cc',
         'browser/sync/js/js_test_util.h',
+        'browser/sync/syncable/model_type_test_util.cc',
+        'browser/sync/syncable/model_type_test_util.h',
         'browser/sync/test/null_directory_change_delegate.cc',
         'browser/sync/test/null_directory_change_delegate.h',
         'browser/sync/test/null_transaction_observer.cc',
         'browser/sync/test/null_transaction_observer.h',
         'browser/sync/test/engine/test_directory_setter_upper.cc',
         'browser/sync/test/engine/test_directory_setter_upper.h',
       ],
     },
     {
       'target_name': 'test_support_syncapi',
@@ skipping 3946 matching lines @@
               # Use outputs of this action as inputs for the main target build.
               # Seems as a misnomer but makes this happy on Linux (scons).
               'process_outputs_as_sources': 1,
             },
           ],  # 'actions'
         },
       ]
     }],  # 'coverage!=0'
   ],  # 'conditions'
 }