Ensure navigator.getVRDisplays always resolves.

content/browser/BUILD.gn

 # Copyright 2014 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("//build/config/ui.gni")
 import("//media/media_options.gni")
 import("//printing/features/features.gni")
 import("//third_party/WebKit/public/public_features.gni")
 import("//tools/ipc_fuzzer/ipc_fuzzer.gni")
@@ skipping 1930 matching lines @@
   if (enable_mojo_media) {
     configs += [ "//media/mojo/services:mojo_media_config" ]
   }
 
   if (use_ozone) {
     deps += [ "//ui/ozone" ]
   }
 
   if (enable_webvr) {
     deps += [ "//device/vr" ]
+  } else {
+    deps += [ "//device/vr:mojo_bindings" ]
   }
 
   if (enable_ipc_fuzzer) {
     configs += [ "//tools/ipc_fuzzer:ipc_fuzzer_config" ]
   }
 
   if (use_minikin_hyphenation) {
     sources += [
       "hyphenation/hyphenation_impl.cc",
       "hyphenation/hyphenation_impl.h",
     ]
   }
 }
 
 # See comment at the top of //content/BUILD.gn for how this works.
 group("for_content_tests") {
   visibility = [ "//content/test/*" ]
   if (!is_component_build) {
     public_deps = [
       ":browser",
     ]
   } else {
     public_deps = [
       "//third_party/leveldatabase",
     ]
   }
 }