[Chromoting] Refactor the host policy watcher so that policies can easily be added.

remoting/host/policy_hack/fake_policy_watcher.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 "remoting/host/policy_hack/fake_policy_watcher.h"
+
+#include "base/single_thread_task_runner.h"
+
+namespace remoting {
+namespace policy_hack {
+
+FakePolicyWatcher::FakePolicyWatcher(
+    scoped_refptr<base::SingleThreadTaskRunner> task_runner)
+    : PolicyWatcher(task_runner) {
+}
+
+FakePolicyWatcher::~FakePolicyWatcher() {
+}
+
+void FakePolicyWatcher::SetPolicies(const base::DictionaryValue* policies) {
+  UpdatePolicies(policies);
+}
+
+void FakePolicyWatcher::StartWatchingInternal() {
+}
+
+void FakePolicyWatcher::StopWatchingInternal() {
+}
+
+void FakePolicyWatcher::Reload() {
+}
+
+}  // namespace policy_hack
+}  // namespace remoting