Implement WebVR presentation pausing for VR Shell Menu Mode

device/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 DEVICE_VR_VR_DEVICE_MANAGER_H
 #define DEVICE_VR_VR_DEVICE_MANAGER_H
 
 #include <stdint.h>
 
 #include <map>
 #include <memory>
 #include <vector>
 
 #include "base/macros.h"
-#include "base/memory/linked_ptr.h"
+#include "base/memory/ref_counted.h"
 #include "base/threading/thread_checker.h"
 #include "base/timer/timer.h"
 #include "device/vr/vr_client_dispatcher.h"
 #include "device/vr/vr_device.h"
 #include "device/vr/vr_device_provider.h"
 #include "device/vr/vr_export.h"
 #include "device/vr/vr_service.mojom.h"
 #include "device/vr/vr_service_impl.h"
 #include "mojo/public/cpp/bindings/binding_set.h"
 
@@ skipping 22 matching lines @@
                                        unsigned int index,
                                        bool secure_origin);
   DEVICE_VR_EXPORT void ExitPresent(VRServiceImpl* service, unsigned int index);
   void SubmitFrame(VRServiceImpl* service, unsigned int index, VRPosePtr pose);
 
   // VRClientDispatcher implementation
   void OnDeviceChanged(VRDisplayPtr device) override;
   void OnDeviceConnectionStatusChanged(VRDevice* device,
                                        bool is_connected) override;
   void OnPresentEnded(VRDevice* device) override;
+  void OnDisplayBlur(VRDevice* device) override;
+  void OnDisplayFocus(VRDevice* device) override;
 
  private:
   friend class VRDeviceManagerTest;
   friend class VRServiceImplTest;
 
   VRDeviceManager();
   // Constructor for testing.
-  DEVICE_VR_EXPORT explicit VRDeviceManager(
-      std::unique_ptr<VRDeviceProvider> provider);
+  DEVICE_VR_EXPORT explicit VRDeviceManager(VRDeviceProvider* provider);
 
   DEVICE_VR_EXPORT VRDevice* GetDevice(unsigned int index);
 
   static void SetInstance(VRDeviceManager* service);
   static bool HasInstance();
 
   void InitializeProviders();
-  void RegisterProvider(std::unique_ptr<VRDeviceProvider> provider);
+  void RegisterProvider(VRDeviceProvider* provider);
 
   void SchedulePollEvents();
   void PollEvents();
   void StopSchedulingPollEvents();
 
-  using ProviderList = std::vector<linked_ptr<VRDeviceProvider>>;
+  using ProviderList = std::vector<scoped_refptr<VRDeviceProvider>>;
   ProviderList providers_;
 
   // Devices are owned by their providers.
   using DeviceMap = std::map<unsigned int, VRDevice*>;
   DeviceMap devices_;
 
   bool vr_initialized_;
 
   using ServiceList = std::vector<VRServiceImpl*>;
   ServiceList services_;
@@ skipping 10 matching lines @@
   base::ThreadChecker thread_checker_;
 
   base::RepeatingTimer timer_;
 
   DISALLOW_COPY_AND_ASSIGN(VRDeviceManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_VR_VR_DEVICE_MANAGER_H