Remove most occurences of PrefRegistrySyncable::UNSYNCABLE_PREF

chrome/browser/extensions/api/enterprise_platform_keys_private/enterprise_platform_keys_private_api.cc

 // Copyright (c) 2013 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.
 
 #include "chrome/browser/extensions/api/enterprise_platform_keys_private/enterprise_platform_keys_private_api.h"
 
 #include <string>
 
 #include "base/base64.h"
 #include "base/callback.h"
@@ skipping 390 matching lines @@
                          async_caller,
                          attestation_flow,
                          install_attributes) {
 }
 
 EPKPChallengeUserKey::~EPKPChallengeUserKey() {
 }
 
 void EPKPChallengeUserKey::RegisterProfilePrefs(
     user_prefs::PrefRegistrySyncable* registry) {
-  registry->RegisterBooleanPref(
-      prefs::kAttestationEnabled,
-      false,
-      user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
-  registry->RegisterListPref(prefs::kAttestationExtensionWhitelist,
-                             user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
+  registry->RegisterBooleanPref(prefs::kAttestationEnabled, false);
+  registry->RegisterListPref(prefs::kAttestationExtensionWhitelist);
 }
 
 bool EPKPChallengeUserKey::RunAsync() {
   scoped_ptr<api_epkp::ChallengeUserKey::Params> params(
       api_epkp::ChallengeUserKey::Params::Create(*args_));
   EXTENSION_FUNCTION_VALIDATE(params.get());
 
   std::string challenge;
   if (!base::Base64Decode(params->challenge, &challenge)) {
     SetError(kChallengeBadBase64Error);
@@ skipping 118 matching lines @@
 
   results_ = api_epkp::ChallengeUserKey::Results::Create(encoded_response);
   SendResponse(true);
 }
 
 bool EPKPChallengeUserKey::IsRemoteAttestationEnabledForUser() const {
   return GetProfile()->GetPrefs()->GetBoolean(prefs::kAttestationEnabled);
 }
 
 }  // namespace extensions