[Sync] Componentize ProfileSyncService

components/browser_sync.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/browser_sync_browser
+      'target_name': 'browser_sync_browser',
+      'type': 'static_library',
+      'dependencies': [
+        '../base/base.gyp:base',
+        '../google_apis/google_apis.gyp:google_apis',
+        '../net/net.gyp:net',
+        '../sync/sync.gyp:sync',
+        '../ui/base/ui_base.gyp:ui_base',
+        'autofill_core_common',
+        'browser_sync_common',
+        'components_strings.gyp:components_strings',
+        'history_core_browser',
+        'invalidation_impl',
+        'invalidation_public',
+        'keyed_service_core',
+        'pref_registry',
+        'signin_core_browser',
+        'syncable_prefs',
+        'sync_driver',
+        'sync_sessions',
+        'version_info',
+      ],
+      'include_dirs': [
+        '..',
+      ],
+      'sources': [
+        # Note: file list duplicated in GN build.
+        'browser_sync/browser/profile_sync_service.cc',
+        'browser_sync/browser/profile_sync_service.h',
+      ],
+    },
+    {
       # GN version: //components/browser_sync_common
       'target_name': 'browser_sync_common',
       'type': 'static_library',
       'dependencies': [
         '../base/base.gyp:base',
       ],
       'include_dirs': [
         '..',
       ],
       'sources': [
         # Note: file list duplicated in GN build.
         'browser_sync/common/browser_sync_switches.cc',
         'browser_sync/common/browser_sync_switches.h',
       ],
     },
   ],
 }