Move all generic Chromium expected results to the generic location

Tools/Scripts/webkitpy/layout_tests/port/chromium_mac.py

 # Copyright (C) 2010 Google Inc. All rights reserved.
 #
 # 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
 # copyright notice, this list of conditions and the following disclaimer
@@ skipping 28 matching lines @@
 
 class ChromiumMacPort(chromium.ChromiumPort):
     SUPPORTED_OS_VERSIONS = ('snowleopard', 'lion', 'mountainlion', 'future')
     port_name = 'chromium-mac'
 
     FALLBACK_PATHS = {
         'snowleopard': [
             'chromium-mac-snowleopard',
             'chromium-mac-lion',
             'chromium-mac',
-            'chromium',
         ],
         'lion': [
             'chromium-mac-lion',
             'chromium-mac',
-            'chromium',
         ],
         'mountainlion': [
             'chromium-mac',
-            'chromium',
         ],
         'future': [
             'chromium-mac',
-            'chromium',
         ],
     }
 
     DEFAULT_BUILD_DIRECTORIES = ('xcodebuild', 'out')
 
     @classmethod
     def determine_full_port_name(cls, host, options, port_name):
         if port_name.endswith('-mac'):
             return port_name + '-' + host.platform.os_version
         return port_name
@@ skipping 46 matching lines @@
     def _path_to_driver(self, configuration=None):
         # FIXME: make |configuration| happy with case-sensitive file systems.
         return self._build_path_with_configuration(configuration, self.driver_name() + '.app', 'Contents', 'MacOS', self.driver_name())
 
     def _path_to_helper(self):
         binary_name = 'LayoutTestHelper'
         return self._build_path(binary_name)
 
     def _path_to_wdiff(self):
         return 'wdiff'