Refactor GvrDelegate ownership into GvrDelegateProvider and fix more threading violations.

device/vr/vr_display_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_DISPLAY_IMPL_H
 #define DEVICE_VR_VR_DISPLAY_IMPL_H
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 27 matching lines @@
 
   void UpdateLayerBounds(int16_t frame_index,
                          mojom::VRLayerBoundsPtr left_bounds,
                          mojom::VRLayerBoundsPtr right_bounds) override;
   void GetVRVSyncProvider(mojom::VRVSyncProviderRequest request) override;
 
   void RequestPresentResult(const RequestPresentCallback& callback,
                             bool secure_origin,
                             bool success);
 
+  void OnVRDisplayInfoCreated(mojom::VRDisplayInfoPtr display_info);
+
   mojo::Binding<mojom::VRDisplay> binding_;
   mojom::VRDisplayClientPtr client_;
   device::VRDevice* device_;
   VRServiceImpl* service_;
 
   base::WeakPtrFactory<VRDisplayImpl> weak_ptr_factory_;
 };
 
 }  // namespace device
 
 #endif  //  DEVICE_VR_VR_DISPLAY_IMPL_H