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

components/browsing_data_ui/BUILD.gn

 # Copyright 2016 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.
 
 static_library("browsing_data_ui") {
   sources = [
     "history_notice_utils.cc",
     "history_notice_utils.h",
   ]
 
   deps = [
     "//base",
     "//components/history/core/browser",
     "//components/sync_driver:sync_driver",
     "//components/version_info",
   ]
 }
 
 source_set("unit_tests") {
   testonly = true
   sources = [
     "history_notice_utils_unittest.cc",
   ]
 
   deps = [
     ":browsing_data_ui",
     "//base",
     "//components/history/core/test:test",
     "//components/signin/core/browser:test_support",
+    "//components/sync/protocol:protocol",
     "//components/sync_driver:test_support",
     "//components/version_info:version_info",
     "//net",
-    "//sync/protocol:protocol",
     "//testing/gtest",
   ]
 }