Convert XRRuntimeEventListener to new Mojo types

This CL converts mojo::AssociatedBinding<XRRuntimeEventListener>
that is left only in BrowserXRRuntime class to the new Mojo type.

Bug: 955171
Change-Id: I114458055b27ffd306e357bad1d01cdd1e303238
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1849736
Commit-Queue: Miyoung Shin <myid.shin@igalia.com>
Reviewed-by: Ken Rockot <rockot@google.com>
Reviewed-by: Klaus Weidner <klausw@chromium.org>
Cr-Commit-Position: refs/heads/master@{#705398}

chrome/browser/vr/service/browser_xr_runtime.cc

@@ -224,15 +224,11 @@ BrowserXRRuntime::BrowserXRRuntime(device::mojom::XRDeviceId id,
                                    device::mojom::VRDisplayInfoPtr display_info)
     : id_(id),
       runtime_(std::move(runtime)),
-      display_info_(ValidateVRDisplayInfo(display_info.get(), id)),
-      binding_(this) {
-  device::mojom::XRRuntimeEventListenerAssociatedPtr listener;
-  binding_.Bind(mojo::MakeRequest(&listener));
-
+      display_info_(ValidateVRDisplayInfo(display_info.get(), id)) {
   // Unretained is safe because we are calling through an InterfacePtr we own,
   // so we won't be called after runtime_ is destroyed.
   runtime_->ListenToDeviceChanges(
-      listener.PassInterface(),
+      receiver_.BindNewEndpointAndPassRemote(),
       base::BindOnce(&BrowserXRRuntime::OnDisplayInfoChanged,
                      base::Unretained(this)));
 }

chrome/browser/vr/service/browser_xr_runtime.h

@@ -14,7 +14,7 @@
 #include "device/vr/public/mojom/isolated_xr_service.mojom.h"
 #include "device/vr/public/mojom/vr_service.mojom.h"
 #include "device/vr/vr_device.h"
-#include "mojo/public/cpp/bindings/associated_binding.h"
+#include "mojo/public/cpp/bindings/associated_receiver.h"
 #include "mojo/public/cpp/bindings/pending_remote.h"
 #include "mojo/public/cpp/bindings/remote.h"
 
@@ -129,7 +129,8 @@ class BrowserXRRuntime : public device::mojom::XRRuntimeEventListener {
   VRServiceImpl* listening_for_activation_service_ = nullptr;
   VRServiceImpl* presenting_service_ = nullptr;
 
-  mojo::AssociatedBinding<device::mojom::XRRuntimeEventListener> binding_;
+  mojo::AssociatedReceiver<device::mojom::XRRuntimeEventListener> receiver_{
+      this};
   std::vector<device::mojom::VRService::GetImmersiveVRDisplayInfoCallback>
       pending_initialization_callbacks_;