Fix dependency of //components/enhanced_bookmarks.

components/enhanced_bookmarks/BUILD.gn

 # Copyright 2014 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.
 
 if (is_android) {
   import("//build/config/android/config.gni")
   import("//build/config/android/rules.gni")
 }
 
 # GYP: //components/enhanced_bookmarks.gypi:enhanced_bookmarks
@@ skipping 27 matching lines @@
     "persistent_image_store.h",
     "pref_names.cc",
     "pref_names.h",
   ]
 
   deps = [
     "//base",
     "//base:prefs",
     "//components/bookmarks/browser",
     "//components/enhanced_bookmarks/proto",
-    "//components/keyed_service/content",
     "//components/keyed_service/core",
     "//components/offline_pages",
     "//components/pref_registry",
     "//components/signin/core/browser",
     "//components/sync_driver",
     "//components/variations",
     "//google_apis",
     "//net",
     "//skia",
     "//sql",
@@ skipping 44 matching lines @@
   ]
   deps = [
     ":test_support",
     "//base",
     "//components/bookmarks/browser",
     "//components/bookmarks/test",
     "//components/enhanced_bookmarks/proto",
     "//sql",
   ]
 }