Implement Invalidator::Acknowledge

sync/sync.gyp

 # Copyright (c) 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     # The core sync library.
@@ skipping 261 matching lines @@
         'notifier/invalidator_state.cc',
         'notifier/invalidator_state.h',
         'notifier/object_id_state_map.cc',
         'notifier/object_id_state_map.h',
       ],
       'conditions': [
         ['OS != "android"', {
           'sources': [
             'notifier/invalidation_notifier.cc',
             'notifier/invalidation_notifier.h',
+            'notifier/invalidation_state_tracker.cc',
             'notifier/invalidation_state_tracker.h',
             'notifier/non_blocking_invalidator.cc',
             'notifier/non_blocking_invalidator.h',
             'notifier/p2p_invalidator.cc',
             'notifier/p2p_invalidator.h',
             'notifier/push_client_channel.cc',
             'notifier/push_client_channel.h',
             'notifier/registration_manager.cc',
             'notifier/registration_manager.h',
             'notifier/state_writer.h',
@@ skipping 585 matching lines @@
           'variables': {
             'test_suite_name': 'sync_unit_tests',
             'input_shlib_path': '<(SHARED_LIB_DIR)/<(SHARED_LIB_PREFIX)sync_unit_tests<(SHARED_LIB_SUFFIX)',
           },
           'includes': [ '../build/apk_test.gypi' ],
         },
       ],
     }],
   ],
 }