Introduce PrefRegistrySyncable, simplifying PrefServiceSyncable.

chrome/browser/sync/sync_prefs_unittest.cc

 // Copyright (c) 2012 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/sync/sync_prefs.h"
 
 #include "base/message_loop.h"
 #include "base/time.h"
 #include "chrome/test/base/testing_pref_service.h"
 #include "sync/internal_api/public/base/model_type.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace browser_sync {
 
 namespace {
 
 using ::testing::InSequence;
 using ::testing::StrictMock;
 
 class SyncPrefsTest : public testing::Test {
  protected:
   virtual void SetUp() OVERRIDE {
-    SyncPrefs::RegisterUserPrefs(&pref_service_);
+    SyncPrefs::RegisterUserPrefs(&pref_service_,
+                                 pref_service_.registry());
   }
 
   TestingPrefServiceSyncable pref_service_;
 
  private:
   MessageLoop loop_;
 };
 
 // Returns all types visible from the setup UI.
 syncer::ModelTypeSet GetUserVisibleTypes() {
@@ skipping 168 matching lines @@
   EXPECT_FALSE(sync_prefs.HasKeepEverythingSynced());
   const syncer::ModelTypeSet user_types = syncer::UserTypes();
   EXPECT_TRUE(sync_prefs.GetPreferredDataTypes(user_types).Empty());
   EXPECT_FALSE(sync_prefs.IsManaged());
   EXPECT_TRUE(sync_prefs.GetEncryptionBootstrapToken().empty());
 }
 
 }  // namespace
 
 }  // namespace browser_sync