Changes top level window creation to include window state in callback

components/mus/public/interfaces/window_tree.mojom

 // 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.
 
 module mus.mojom;
 
 import "components/mus/public/interfaces/compositor_frame.mojom";
 import "components/mus/public/interfaces/cursor.mojom";
 import "components/mus/public/interfaces/input_events.mojom";
 import "components/mus/public/interfaces/mus_constants.mojom";
@@ skipping 75 matching lines @@
   // unique). Additionally the connection id (embedded in |window_id|) must
   // match that of the connection.
   // Errors:
   //   ERROR_CODE_VALUE_IN_USE: a window already exists with the specified id.
   //   ERROR_CODE_ILLEGAL_ARGUMENT: The connection part of |window_id| does not
   //     match the connection id of the client.
   NewWindow(uint32 change_id,
             uint32 window_id,
             map<string, array<uint8>>? properties);
 
-  // Requests the WindowManager to create a new top level window.
+  // Requests the WindowManager to create a new top level window. On success
+  // OnTopLevelCreated() is called with the WindowData for the new window. On
+  // failure OnChangeCompleted() is called.
   // TODO(sky): this likely needs context, maybe in |properties|.
   NewTopLevelWindow(uint32 change_id,
                     uint32 window_id,
                     map<string, array<uint8>> properties);
 
   // Deletes a window. This does not recurse. No hierarchy change notifications
   // are sent as a result of this. Only the connection that created the window
   // can delete it.
   DeleteWindow(uint32 change_id, uint32 window_id);
 
@@ skipping 151 matching lines @@
   // Invoked when the application embedded at |window| is disconnected. In other
   // words the embedded app closes the connection to the server. This is called
   // on the connection that created |window| as well as any ancestors that have
   // the embed root policy.
   OnEmbeddedAppDisconnected(uint32 window);
 
   // Sent when another connection is embedded in the Window this connection was
   // previously embedded in. See Embed() for more information.
   OnUnembed(uint32 window);
 
+  // Called in response to NewTopLevelWindow() successfully completing.
+  OnTopLevelCreated(uint32 change_id, WindowData data);
+
   // Invoked when a window's bounds have changed.
   OnWindowBoundsChanged(uint32 window,
                         mojo.Rect old_bounds,
                         mojo.Rect new_bounds);
 
   OnClientAreaChanged(uint32 window_id,
                       mojo.Insets new_client_area,
                       array<mojo.Rect> new_additional_client_areas);
 
   OnTransientWindowAdded(uint32 window_id,
@@ skipping 106 matching lines @@
   WmResponse(uint32 change_id, bool response);
 
   // Calls WindowTreeClient::RequestClose() on the embedded app at the
   // specified window.
   WmRequestClose(uint32 window_id);
 
   // Response from WmCreateTopLevelWindow() informing the client of the id for
   // the new window.
   OnWmCreatedTopLevelWindow(uint32 change_id, uint32 window_id);
 };