Removing FakePolicyWatcher and introducing FakeAsyncPolicyLoader.

components/policy/core/common/fake_async_policy_loader.h

+// Copyright 2015 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 COMPONENTS_POLICY_CORE_COMMON_FAKE_ASYNC_POLICY_LOADER_H_
+#define COMPONENTS_POLICY_CORE_COMMON_FAKE_ASYNC_POLICY_LOADER_H_
+
+#include "base/macros.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "components/policy/core/common/async_policy_loader.h"
+#include "components/policy/core/common/policy_bundle.h"
+
+namespace base {
+class SequencedTaskRunner;
+}  // namespace base
+
+namespace policy {
+
+// Fake AsyncPolicyLoader for testing with test-controlled policies.
+//
+// Typical test code would populate the policy contents via calls to
+// ClearPolicies and AddPolicies and then notify the rest of the policy
+// subsystem of the changes by calling PostReloadOnBackgroundThread.
+class FakeAsyncPolicyLoader : public AsyncPolicyLoader {
+ public:
+  explicit FakeAsyncPolicyLoader(
+      const scoped_refptr<base::SequencedTaskRunner>& task_runner);
+
+  // Implementation of virtual methods from AsyncPolicyLoader base class.
+  scoped_ptr<PolicyBundle> Load() override;
+  void InitOnBackgroundThread() override;
+
+  // Provides content for the simulated / faked policies.
+  void SetPolicies(const PolicyBundle& policy_bundle);
+
+  // Notifies the rest of the policy subsystem that policy contents have
+  // changed.  This simulates / fakes a notification that normally would be
+  // triggered by a FilePathWatcher or (registry)ObjectWatcher in a real loader.
+  //
+  // See AsyncPolicyLoader::Reload method for description of the |force|
+  // parameter.
+  void PostReloadOnBackgroundThread(bool force);
+
+ private:
+  PolicyBundle policy_bundle_;
+
+  DISALLOW_COPY_AND_ASSIGN(FakeAsyncPolicyLoader);
+};
+
+}  // namespace policy
+
+#endif  // COMPONENTS_POLICY_CORE_COMMON_FAKE_ASYNC_POLICY_LOADER_H_