Decompose BrowserStateMonitor into two parts, simplifying unit tests and APIs.

chrome/chrome_tests_unit.gypi

 # Copyright 2012 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.
 {
   'targets': [
     {
       # This target contains mocks and test utilities that don't belong in
       # production libraries but are used by more than one test executable.
       'target_name': 'test_support_common',
       'type': 'static_library',
@@ skipping 561 matching lines @@
         'browser/chromeos/imageburner/burn_manager_unittest.cc',
         'browser/chromeos/input_method/browser_state_monitor_unittest.cc',
         'browser/chromeos/input_method/candidate_window_controller_impl_unittest.cc',
         'browser/chromeos/input_method/candidate_window_view_unittest.cc',
         'browser/chromeos/input_method/ibus_controller_base_unittest.cc',
         'browser/chromeos/input_method/ibus_controller_impl_unittest.cc',
         'browser/chromeos/input_method/ibus_controller_unittest.cc',
         'browser/chromeos/input_method/input_method_configuration_unittest.cc',
         'browser/chromeos/input_method/input_method_descriptor_unittest.cc',
         'browser/chromeos/input_method/input_method_manager_impl_unittest.cc',
+        'browser/chromeos/input_method/input_method_persistence_unittest.cc',
         'browser/chromeos/input_method/input_method_property_unittest.cc',
         'browser/chromeos/input_method/input_method_util_unittest.cc',
         'browser/chromeos/input_method/input_method_whitelist_unittest.cc',
         'browser/chromeos/input_method/xkeyboard_unittest.cc',
         'browser/chromeos/kiosk_mode/kiosk_mode_idle_logout_unittest.cc',
         'browser/chromeos/kiosk_mode/kiosk_mode_settings_unittest.cc',
         'browser/chromeos/language_preferences_unittest.cc',
         'browser/chromeos/login/mock_auth_attempt_state_resolver.cc',
         'browser/chromeos/login/mock_auth_attempt_state_resolver.h',
         'browser/chromeos/login/online_attempt_unittest.cc',
@@ skipping 1718 matching lines @@
             'unit_tests.isolate',
           ],
           'sources': [
             'unit_tests.isolate',
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }