arc-bridge: Introduce the ArcService class

chrome/browser/chromeos/arc/arc_auth_service.h

+// Copyright 2016 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 CHROME_BROWSER_CHROMEOS_ARC_ARC_AUTH_SERVICE_H_
+#define CHROME_BROWSER_CHROMEOS_ARC_ARC_AUTH_SERVICE_H_
+
+#include "base/macros.h"
+#include "components/arc/arc_bridge_service.h"
+#include "components/arc/arc_service.h"
+#include "components/arc/common/auth.mojom.h"
+#include "mojo/public/cpp/bindings/binding.h"
+
+namespace arc {
+
+// This class proxies the request from the client to fetch an auth code from
+// LSO.
+class ArcAuthService : public ArcService,
+                       public AuthHost,
+                       public ArcBridgeService::Observer {
+ public:
+  explicit ArcAuthService(ArcBridgeService* bridge_service);
+  ~ArcAuthService() override;
+
+ private:
+  // Overrides ArcBridgeService::Observer.
+  void OnAuthInstanceReady() override;
+
+  // Overrides AuthHost.
+  void GetAuthCode(const GetAuthCodeCallback& callback) override;
+
+  mojo::Binding<AuthHost> binding_;
+
+  DISALLOW_COPY_AND_ASSIGN(ArcAuthService);
+};
+
+}  // namespace arc
+
+#endif  // CHROME_BROWSER_CHROMEOS_ARC_ARC_AUTH_SERVICE_H_