Removing FakePolicyWatcher and introducing FakeAsyncPolicyLoader.

remoting/host/policy_hack/fake_policy_watcher.h

-// 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.
-
-#ifndef REMOTING_HOST_POLICY_HACK_FAKE_POLICY_WATCHER_H_
-#define REMOTING_HOST_POLICY_HACK_FAKE_POLICY_WATCHER_H_
-
-#include "remoting/host/policy_hack/policy_watcher.h"
-
-namespace remoting {
-namespace policy_hack {
-
-class FakePolicyWatcher : public PolicyWatcher {
- public:
-  explicit FakePolicyWatcher(
-      scoped_refptr<base::SingleThreadTaskRunner> task_runner);
-  ~FakePolicyWatcher() override;
-
-  void SetPolicies(const base::DictionaryValue* policies);
-
-  void SignalTransientErrorForTest();
-
- protected:
-  void StartWatchingInternal() override;
-  void StopWatchingInternal() override;
-};
-
-}  // namespace policy_hack
-}  // namespace remoting
-
-#endif  // REMOTING_HOST_POLICY_HACK_FAKE_POLICY_WATCHER_H_