Added support for OpenVR controllers

device/vr/openvr/openvr_device_provider.h

 // Copyright 2017 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_OPENVR_DEVICE_PROVIDER_H
 #define DEVICE_VR_OPENVR_DEVICE_PROVIDER_H
 
 #include <memory>
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "device/vr/vr_device_provider.h"
 #include "device/vr/vr_export.h"
 
+namespace vr {
+class IVRSystem;
+}  // namespace vr
+
 namespace device {
 
 class OpenVRDeviceProvider : public VRDeviceProvider {
  public:
   OpenVRDeviceProvider();
   ~OpenVRDeviceProvider() override;
 
   void GetDevices(std::vector<VRDevice*>* devices) override;
   void Initialize() override;
 
   void SetListeningForActivate(bool listening) override;
 
  private:
+  bool initialized_;
+  vr::IVRSystem* vr_system_;
+
   DISALLOW_COPY_AND_ASSIGN(OpenVRDeviceProvider);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_VR_OPENVR_DEVICE_PROVIDER_H