Remove duplicated user_prefs::TestingPrefServiceSyncable

components/dom_distiller/core/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.
 
 static_library("core") {
   sources = [
     "article_attachments_data.cc",
     "article_attachments_data.h",
     "article_distillation_update.cc",
     "article_distillation_update.h",
@@ skipping 132 matching lines @@
     "url_utils_unittest.cc",
     "viewer_unittest.cc",
   ]
 
   deps = [
     ":core",
     ":test_support",
     ":unit_tests_bundle_data",
     "//base",
     "//components/leveldb_proto:test_support",
-    "//components/pref_registry:test_support",
     "//components/resources",
     "//components/strings",
     "//components/sync",
+    "//components/sync_preferences:test_support",
     "//net:test_support",
     "//testing/gmock",
     "//testing/gtest",
     "//ui/base",
     "//url",
   ]
 }
 
 if (is_android) {
   import("//build/config/android/rules.gni")
 
   generate_jni("jni_headers") {
     sources = [
       "android/java/src/org/chromium/components/dom_distiller/core/DistilledPagePrefs.java",
       "android/java/src/org/chromium/components/dom_distiller/core/DomDistillerService.java",
       "android/java/src/org/chromium/components/dom_distiller/core/DomDistillerUrlUtils.java",
     ]
     jni_package = "dom_distiller_core"
   }
 }