Remove CreateDefaultDisplay().

services/ui/ws/window_server.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/ws/window_server.h"
 
 #include <set>
 #include <string>
 
 #include "base/logging.h"
@@ skipping 216 matching lines @@
     const ServerWindow* window) const {
   if (!window)
     return nullptr;
   for (auto& pair : tree_map_) {
     if (pair.second->HasRoot(window))
       return pair.second.get();
   }
   return nullptr;
 }
 
-void WindowServer::OnFirstWindowManagerWindowTreeFactoryReady() {
-  if (display_manager_->has_active_or_pending_displays())
-    return;
-
-  // We've been supplied a WindowManagerFactory and no displays have been
-  // created yet. Treat this as a signal to create a Display.
-  // TODO(sky): we need a better way to determine this, most likely a switch.
-  delegate_->CreateDefaultDisplays();
-}
-
 UserActivityMonitor* WindowServer::GetUserActivityMonitorForUser(
     const UserId& user_id) {
   DCHECK_GT(activity_monitor_map_.count(user_id), 0u);
   return activity_monitor_map_[user_id].get();
 }
 
 bool WindowServer::SetFocusedWindow(ServerWindow* window) {
   // TODO(sky): this should fail if there is modal dialog active and |window|
   // is outside that.
   ServerWindow* currently_focused = GetFocusedWindow();
@@ skipping 549 matching lines @@
 void WindowServer::OnUserIdAdded(const UserId& id) {
   activity_monitor_map_[id] = base::MakeUnique<UserActivityMonitor>(nullptr);
 }
 
 void WindowServer::OnUserIdRemoved(const UserId& id) {
   activity_monitor_map_.erase(id);
 }
 
 }  // namespace ws
 }  // namespace ui