Connect mojom::DisplayController from ash to ui.

services/ui/service.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 "services/ui/service.h"
 
 #include <set>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 195 matching lines @@
   registry->AddInterface<mojom::WindowManagerWindowTreeFactory>(this);
   registry->AddInterface<mojom::WindowTreeFactory>(this);
   if (test_config_)
     registry->AddInterface<WindowServerTest>(this);
 
   // On non-Linux platforms there will be no DeviceDataManager instance and no
   // purpose in adding the Mojo interface to connect to.
   if (input_device_server_.IsRegisteredAsObserver())
     input_device_server_.AddInterface(registry);
 
+  platform_screen_->AddInterfaces(registry);
+
 #if defined(USE_OZONE)
   ui::OzonePlatform::GetInstance()->AddInterfaces(registry);
 #endif
 
   return true;
 }
 
 void Service::OnFirstDisplayReady() {
   PendingRequests requests;
   requests.swap(pending_requests_);
@@ skipping 128 matching lines @@
                      mojom::WindowServerTestRequest request) {
   if (!test_config_)
     return;
   mojo::MakeStrongBinding(
       base::MakeUnique<ws::WindowServerTestImpl>(window_server_.get()),
       std::move(request));
 }
 
 
 }  // namespace ui