Add display task to trigger display configuration

ui/ozone/common/native_display_delegate_ozone.cc

 // 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.
 
 #include "ui/ozone/common/native_display_delegate_ozone.h"
 
 #include "base/logging.h"
 #include "ui/ozone/common/display_snapshot_proxy.h"
 #include "ui/ozone/common/display_util.h"
 
@@ skipping 38 matching lines @@
 }
 
 void NativeDisplayDelegateOzone::ForceDPMSOn() {
   NOTIMPLEMENTED();
 }
 
 std::vector<ui::DisplaySnapshot*> NativeDisplayDelegateOzone::GetDisplays() {
   return displays_.get();
 }
 
+void NativeDisplayDelegateOzone::GetDisplays(
+    const GetDisplaysCallback& callback) {
+  callback.Run(GetDisplays());
+}
+
 void NativeDisplayDelegateOzone::AddMode(const ui::DisplaySnapshot& output,
                                          const ui::DisplayMode* mode) {
   NOTIMPLEMENTED();
 }
 
 bool NativeDisplayDelegateOzone::Configure(const ui::DisplaySnapshot& output,
                                            const ui::DisplayMode* mode,
                                            const gfx::Point& origin) {
   NOTIMPLEMENTED();
   return true;
@@ skipping 40 matching lines @@
 void NativeDisplayDelegateOzone::AddObserver(NativeDisplayObserver* observer) {
   NOTIMPLEMENTED();
 }
 
 void NativeDisplayDelegateOzone::RemoveObserver(
     NativeDisplayObserver* observer) {
   NOTIMPLEMENTED();
 }
 
 }  // namespace ui