Reland of mojo VR interface simpified.

device/vr/BUILD.gn

 # 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.
 
 import("//build/config/features.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")  # For generate_jni().
 }
 
 component("vr") {
   output_name = "device_vr"
 
   sources = [
-    "vr_client_dispatcher.h",
     "vr_device.cc",
     "vr_device.h",
     "vr_device_manager.cc",
     "vr_device_manager.h",
     "vr_device_provider.h",
+    "vr_display_impl.cc",
+    "vr_display_impl.h",
     "vr_service_impl.cc",
     "vr_service_impl.h",
   ]
 
   deps = [
     ":mojo_bindings",
     "//base",
     "//mojo/public/cpp/bindings",
     "//ui/gfx",
   ]
@@ skipping 39 matching lines @@
   ]
 }
 
 mojom("mojo_bindings") {
   sources = [
     "vr_service.mojom",
   ]
 
   use_new_wrapper_types = false
 }