Send vrdisplayactivate to the most recently focused navigator listening for displayactivate.

device/vr/vr_display_impl.cc

 // 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.
 
 #include <utility>
 
 #include "base/bind.h"
 #include "device/vr/vr_device.h"
+#include "device/vr/vr_device_manager.h"
 #include "device/vr/vr_service_impl.h"
 
 namespace device {
 
 VRDisplayImpl::VRDisplayImpl(device::VRDevice* device,
                              VRServiceImpl* service,
                              mojom::VRServiceClient* service_client,
                              mojom::VRDisplayInfoPtr display_info)
     : binding_(this),
       device_(device),
@@ skipping 19 matching lines @@
 
 void VRDisplayImpl::OnBlur() {
   client_->OnBlur();
 }
 
 void VRDisplayImpl::OnFocus() {
   client_->OnFocus();
 }
 
 void VRDisplayImpl::OnActivate(mojom::VRDisplayEventReason reason) {
+  VRDeviceManager* manager = VRDeviceManager::GetInstance();
+  if (!manager->IsMostRecentlyListeningForActivate(service_))
+    return;
   client_->OnActivate(reason);
 }
 
 void VRDisplayImpl::OnDeactivate(mojom::VRDisplayEventReason reason) {
   client_->OnDeactivate(reason);
 }
 
 void VRDisplayImpl::ResetPose() {
   if (!device_->IsAccessAllowed(this))
     return;
@@ skipping 50 matching lines @@
                              source_height);
 }
 
 void VRDisplayImpl::GetVRVSyncProvider(mojom::VRVSyncProviderRequest request) {
   if (!device_->IsAccessAllowed(this)) {
     return;
   }
   device_->GetVRVSyncProvider(std::move(request));
 }
 }