Removing FakePolicyWatcher and introducing FakeAsyncPolicyLoader.

components/policy/core/common/async_policy_loader.cc

 // Copyright 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 "components/policy/core/common/async_policy_loader.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/sequenced_task_runner.h"
 #include "components/policy/core/common/policy_bundle.h"
@@ skipping 10 matching lines @@
 // makes it possible to batch quasi-simultaneous changes.
 const int kSettleIntervalSeconds = 5;
 
 // The time interval for rechecking policy. This is the fallback in case the
 // implementation never detects changes.
 const int kReloadIntervalSeconds = 15 * 60;
 
 }  // namespace
 
 AsyncPolicyLoader::AsyncPolicyLoader(
-    scoped_refptr<base::SequencedTaskRunner> task_runner)
+    const scoped_refptr<base::SequencedTaskRunner>& task_runner)
     : task_runner_(task_runner),
       weak_factory_(this) {}
 
 AsyncPolicyLoader::~AsyncPolicyLoader() {}
 
 Time AsyncPolicyLoader::LastModificationTime() {
   return Time();
 }
 
 void AsyncPolicyLoader::Reload(bool force) {
@@ skipping 87 matching lines @@
   const TimeDelta age = now - last_modification_clock_;
   if (age < kSettleInterval) {
     *delay = kSettleInterval - age;
     return false;
   }
 
   return true;
 }
 
 }  // namespace policy