Remove files that don't exist, and fix typos in gyp files

chrome/chrome.gyp

 # 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': {
     'chromium_code': 1,
 
     'variables': {
       'version_py_path': 'tools/build/version.py',
       'version_path': 'VERSION',
@@ skipping 744 matching lines @@
         'browser/sync/notifier/non_blocking_invalidation_notifier.h',
         'browser/sync/notifier/non_blocking_invalidation_notifier.cc',
         'browser/sync/notifier/p2p_notifier.h',
         'browser/sync/notifier/p2p_notifier.cc',
         'browser/sync/notifier/registration_manager.cc',
         'browser/sync/notifier/registration_manager.h',
         'browser/sync/notifier/state_writer.h',
         'browser/sync/notifier/sync_notifier.h',
         'browser/sync/notifier/sync_notifier_factory.h',
         'browser/sync/notifier/sync_notifier_factory.cc',
-        'browser/sync/notifier/sync_notifier_callback.h',
       ],
       'include_dirs': [
         '..',
       ],
       'dependencies': [
         'sync',
         '../jingle/jingle.gyp:notifier',
         '../third_party/cacheinvalidation/cacheinvalidation.gyp:cacheinvalidation',
       ],
       # This target exports a hard dependency because it depends on
@@ skipping 859 matching lines @@
       }],  # targets
     }],  # os_posix == 1 and OS != "mac"
   ],  # 'conditions'
 }
 
 # Local Variables:
 # tab-width:2
 # indent-tabs-mode:nil
 # End:
 # vim: set expandtab tabstop=2 shiftwidth=2: