Introduce PrefRegistrySyncable, simplifying PrefServiceSyncable.

chrome/browser/policy/user_cloud_policy_manager_chromeos_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/policy/user_cloud_policy_manager_chromeos.h"
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "chrome/browser/policy/cloud_policy_constants.h"
@@ skipping 17 matching lines @@
 
 namespace policy {
 namespace {
 
 class UserCloudPolicyManagerChromeOSTest : public testing::Test {
  protected:
   UserCloudPolicyManagerChromeOSTest()
       : store_(NULL) {}
 
   virtual void SetUp() OVERRIDE {
-    chrome::RegisterLocalState(prefs_.registry(), &prefs_);
+    chrome::RegisterLocalState(&prefs_, prefs_.registry());
 
     // Set up a policy map for testing.
     policy_map_.Set("key", POLICY_LEVEL_MANDATORY, POLICY_SCOPE_USER,
                     base::Value::CreateStringValue("value"));
     expected_bundle_.Get(PolicyNamespace(POLICY_DOMAIN_CHROME, std::string()))
         .CopyFrom(policy_map_);
 
     // Create a fake policy blob to deliver to the client.
     em::PolicyData policy_data;
     policy_data.set_policy_type(dm_protocol::kChromeUserPolicyType);
@@ skipping 107 matching lines @@
 
   // Cancelling the initial fetch should flip the flag.
   EXPECT_CALL(observer_, OnUpdatePolicy(manager_.get()));
   manager_->CancelWaitForPolicyFetch();
   EXPECT_TRUE(manager_->IsInitializationComplete(POLICY_DOMAIN_CHROME));
   Mock::VerifyAndClearExpectations(&observer_);
 }
 
 }  // namespace
 }  // namespace policy