Refactored VRService interaction and added VRServiceClient

device/vr/vr_service_impl.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 DEVICE_VR_VR_SERVICE_IMPL_H
+#define DEVICE_VR_VR_SERVICE_IMPL_H
+
+#include <memory>
+
+#include "base/macros.h"
+
+#include "device/vr/vr_export.h"
+#include "device/vr/vr_service.mojom.h"
+#include "mojo/public/cpp/bindings/binding.h"
+
+namespace device {
+
+class VRServiceImpl : public VRService {
+ public:
+  DEVICE_VR_EXPORT ~VRServiceImpl() override;
+
+  DEVICE_VR_EXPORT static void BindRequest(
+      mojo::InterfaceRequest<VRService> request);
+
+  VRServiceClientPtr& client() { return client_; }
+
+ private:
+  VRServiceImpl();
+
+  // Mojo connection handling.
+  void Bind(mojo::InterfaceRequest<VRService> request);
+  void OnConnectionError();
+  void OnClientConnectionError();
+
+  // mojom::VRService implementation
+  void SetClient(VRServiceClientPtr client) override;
+  void GetDisplays(const GetDisplaysCallback& callback) override;
+  void GetPose(uint32_t index, const GetPoseCallback& callback) override;
+  void ResetPose(uint32_t index) override;
+
+  std::unique_ptr<mojo::Binding<VRService>> binding_;
+  VRServiceClientPtr client_;
+
+  DISALLOW_COPY_AND_ASSIGN(VRServiceImpl);
+};
+
+}  // namespace device
+
+#endif  // DEVICE_VR_VR_SERVICE_IMPL_H