Fix window/display bounds with multiple windows in mus.

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 339 matching lines @@
 void Service::Create(const shell::Identity& remote_identity,
                      mojom::WindowServerTestRequest request) {
   if (!test_config_)
     return;
   new ws::WindowServerTestImpl(window_server_.get(), std::move(request));
 }
 
 void Service::OnCreatedPhysicalDisplay(int64_t id, const gfx::Rect& bounds) {
   platform_display_init_params_.display_bounds = bounds;
   platform_display_init_params_.display_id = id;
+  platform_display_init_params_.platform_screen = platform_screen_.get();
 
   // Display manages its own lifetime.
   ws::Display* host_impl =
       new ws::Display(window_server_.get(), platform_display_init_params_);
   host_impl->Init(nullptr);
 
   if (touch_controller_)
     touch_controller_->UpdateTouchTransforms();
 }
 
 }  // namespace ui