[CrOS Tether] Create KeepAliveScheduler, a class which schedules keep-alive tickles to be sent to a…

chromeos/components/tether/fake_active_host.h

Index: chromeos/components/tether/fake_active_host.h
diff --git a/chromeos/components/tether/fake_active_host.h b/chromeos/components/tether/fake_active_host.h
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+++ b/chromeos/components/tether/fake_active_host.h
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+// Copyright 2017 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 CHROMEOS_COMPONENTS_TETHER_FAKE_ACTIVE_HOST_H_
+#define CHROMEOS_COMPONENTS_TETHER_FAKE_ACTIVE_HOST_H_
+
+#include <string>
+
+#include "base/callback.h"
+#include "base/macros.h"
+#include "base/memory/weak_ptr.h"
+#include "base/observer_list.h"
+#include "chromeos/components/tether/active_host.h"
+
+namespace chromeos {
+
+namespace tether {
+
+// Test double for ActiveHost.
+class FakeActiveHost : public ActiveHost {
+ public:
+  FakeActiveHost();
+  ~FakeActiveHost() override;
+
+  // ActiveHost:
+  void SetActiveHostDisconnected() override;
+  void SetActiveHostConnecting(
+      const std::string& active_host_device_id) override;
+  void SetActiveHostConnected(const std::string& active_host_device_id,
+                              const std::string& wifi_network_id) override;
+  void GetActiveHost(
+      const ActiveHost::ActiveHostCallback& active_host_callback) override;
+  ActiveHostStatus GetActiveHostStatus() const override;
+  std::string GetActiveHostDeviceId() const override;
+  std::string GetWifiNetworkId() const override;
+
+ private:
+  void SetActiveHost(ActiveHostStatus active_host_status,
+                     const std::string& active_host_device_id,
+                     const std::string& wifi_network_id);
+
+  ActiveHost::ActiveHostStatus active_host_status_;
+  std::string active_host_device_id_;
+  std::string wifi_network_id_;
+
+  DISALLOW_COPY_AND_ASSIGN(FakeActiveHost);
+};
+
+}  // namespace tether
+
+}  // namespace chromeos
+
+#endif  // CHROMEOS_COMPONENTS_TETHER_FAKE_ACTIVE_HOST_H_