Switch from Delegate to Observer.

components/arc/test/fake_arc_bridge_instance.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_ARC_TEST_FAKE_ARC_BRIDGE_INSTANCE_H_
-#define COMPONENTS_ARC_TEST_FAKE_ARC_BRIDGE_INSTANCE_H_
-
-#include "base/callback_forward.h"
-#include "base/macros.h"
-#include "components/arc/arc_bridge_service.h"
-#include "components/arc/common/arc_bridge.mojom.h"
-#include "mojo/public/cpp/bindings/binding.h"
-
-namespace arc {
-
-class FakeArcBridgeInstance : public mojom::ArcBridgeInstance {
- public:
-  class Delegate {
-   public:
-    virtual ~Delegate() = default;
-    virtual void OnStopped(ArcBridgeService::StopReason reason) = 0;
-  };
-
-  FakeArcBridgeInstance();
-  ~FakeArcBridgeInstance() override;
-
-  void set_delegate(Delegate* delegate) { delegate_ = delegate; }
-
-  // Finalizes the connection between the host and the instance, and signals
-  // the host that the boot sequence has finished.
-  void Bind(mojo::InterfaceRequest<mojom::ArcBridgeInstance> interface_request);
-
-  // Resets the binding. Useful to simulate a restart.
-  void Unbind();
-
-  // ArcBridgeInstance:
-  void Init(mojom::ArcBridgeHostPtr host) override;
-
-  // Ensures the call to Init() has been dispatched.
-  void WaitForInitCall();
-
-  // The number of times Init() has been called.
-  int init_calls() const { return init_calls_; }
-
-  // Stops the instance.
-  void Stop(ArcBridgeService::StopReason reason);
-
- private:
-  Delegate* delegate_ = nullptr;
-
-  // Keeps quit closure to wake the running nested RunLoop.
-  base::Closure quit_closure_;
-
-  // Mojo endpoints.
-  mojo::Binding<mojom::ArcBridgeInstance> binding_;
-  mojom::ArcBridgeHostPtr host_ptr_;
-  int init_calls_ = 0;
-
-  DISALLOW_COPY_AND_ASSIGN(FakeArcBridgeInstance);
-};
-
-}  // namespace arc
-
-#endif  // COMPONENTS_ARC_TEST_FAKE_ARC_BRIDGE_INSTANCE_H_