Adds ability for WindowManager to create display roots

services/ui/ws/window_server.h

 // 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.
 
 #ifndef SERVICES_UI_WS_WINDOW_SERVER_H_
 #define SERVICES_UI_WS_WINDOW_SERVER_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 73 matching lines @@
                             std::unique_ptr<AccessPolicy> access_policy);
 
   // Adds |tree_impl_ptr| to the set of known trees. Use DestroyTree() to
   // destroy the tree.
   void AddTree(std::unique_ptr<WindowTree> tree_impl_ptr,
                std::unique_ptr<WindowTreeBinding> binding,
                mojom::WindowTreePtr tree_ptr);
   WindowTree* CreateTreeForWindowManager(
       const UserId& user_id,
       mojom::WindowTreeRequest window_tree_request,
-      mojom::WindowTreeClientPtr window_tree_client);
+      mojom::WindowTreeClientPtr window_tree_client,
+      bool automatically_create_display_roots);
   // Invoked when a WindowTree's connection encounters an error.
   void DestroyTree(WindowTree* tree);
 
   // Returns the tree by client id.
   WindowTree* GetTreeWithId(ClientSpecificId client_id);
 
   WindowTree* GetTreeWithClientName(const std::string& client_name);
 
   size_t num_trees() const { return tree_map_.size(); }
 
@@ skipping 282 matching lines @@
       frame_sink_manager_client_binding_;
   cc::mojom::FrameSinkManagerPtr frame_sink_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowServer);
 };
 
 }  // namespace ws
 }  // namespace ui
 
 #endif  // SERVICES_UI_WS_WINDOW_SERVER_H_