[Sync] Move //components/sync_driver to //components/sync/driver.

components/sync_sessions.gypi

 # Copyright 2015 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': [
     {
       # GN version: //components/sync_sessions
       'target_name': 'sync_sessions',
       'type': 'static_library',
       'include_dirs': [
         '..',
       ],
       'dependencies': [
         '../base/base.gyp:base',
         '../components/sync.gyp:sync',
         '../url/url.gyp:url_lib',
         'bookmarks_browser',
         'history_core_browser',
         'prefs/prefs.gyp:prefs',
-        'sync_driver',
       ],
       'sources': [
         # Note: sources list duplicated in GN build.
         'sync_sessions/favicon_cache.cc',
         'sync_sessions/favicon_cache.h',
         'sync_sessions/local_session_event_router.h',
         'sync_sessions/open_tabs_ui_delegate.cc',
         'sync_sessions/open_tabs_ui_delegate.h',
         'sync_sessions/revisit/bookmarks_by_url_provider_impl.cc',
         'sync_sessions/revisit/bookmarks_by_url_provider_impl.h',
@@ skipping 57 matching lines @@
       'include_dirs': [
         '..',
       ],
       'sources': [
         'sync_sessions/fake_sync_sessions_client.cc',
         'sync_sessions/fake_sync_sessions_client.h',
       ],
     }
   ]
 }