Adding Chrome-side WebVR interface

content/browser/vr/vr_device_manager.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 CONTENT_BROWSER_VR_VR_DEVICE_MANAGER_H
+#define CONTENT_BROWSER_VR_VR_DEVICE_MANAGER_H
+
+#include <map>
+#include <vector>
+
+#include "base/basictypes.h"
+#include "base/memory/linked_ptr.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/threading/thread_checker.h"
+#include "content/browser/vr/vr_device.h"
+#include "content/browser/vr/vr_device_provider.h"
+#include "content/common/content_export.h"
+#include "content/common/vr_service.mojom.h"
+#include "mojo/common/weak_binding_set.h"
+
+namespace content {
+
+class VRDeviceManager : public VRService, public mojo::ErrorHandler {
+ public:
+  ~VRDeviceManager() override;
+
+  static void BindRequest(mojo::InterfaceRequest<VRService> request);
+
+  // Returns the VRDeviceManager singleton.
+  static VRDeviceManager* GetInstance();
+
+  mojo::Array<VRDeviceInfoPtr> GetVRDevices();
+  VRDevice* GetDevice(unsigned int index);
+
+ private:
+  friend class VRDeviceManagerTest;
+
+  VRDeviceManager();
+  // Constructor for testing.
+  explicit VRDeviceManager(scoped_ptr<VRDeviceProvider> provider);
+
+  static void SetInstance(VRDeviceManager* service);
+  static bool HasInstance();
+
+  void InitializeProviders();
+  void RegisterProvider(scoped_ptr<VRDeviceProvider> provider);
+
+  // VRService implementation
+  void GetDevices(const GetDevicesCallback& callback) override;
+  void GetSensorState(uint32_t index,
+                      const GetSensorStateCallback& callback) override;
+  void ResetSensor(uint32_t index) override;
+
+  // mojo::ErrorHandler implementation
+  void OnConnectionError() override;
+
+  using ProviderList = std::vector<linked_ptr<VRDeviceProvider>>;
+  ProviderList providers_;
+
+  // Devices are owned by their providers.
+  using DeviceMap = std::map<unsigned int, VRDevice*>;
+  DeviceMap devices_;
+
+  bool vr_initialized_;
+
+  mojo::WeakBindingSet<VRService> bindings_;
+
+  // For testing. If true will not delete self when consumer count reaches 0.
+  bool keep_alive_;
+
+  base::ThreadChecker thread_checker_;
+
+  DISALLOW_COPY_AND_ASSIGN(VRDeviceManager);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_VR_VR_DEVICE_MANAGER_H