chromeos: makes mus send keyevents to display root when nothing has focus

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 24 matching lines @@
 
 // Returns true if |window| is considered the active window manager for
 // |display|.
 bool IsWindowConsideredWindowManagerRoot(const Display* display,
                                          const ServerWindow* window) {
   if (!display)
     return false;
 
   const WindowManagerDisplayRoot* display_root =
       display->GetActiveWindowManagerDisplayRoot();
-  if (!display_root)
-    return false;
-
-  if (window == display_root->root())
-    return true;
-
-  // If the window manager manually creates displays then there is an extra
-  // window, the window supplied via SetDisplayRoot().
-  return !display_root->window_manager_state()
-              ->window_tree()
-              ->automatically_create_display_roots() &&
-         window->parent() == display_root->root();
+  return display_root && display_root->GetClientVisibileRoot() == window;
 }
 
 }  // namespace
 
 struct WindowServer::CurrentMoveLoopState {
   uint32_t change_id;
   ServerWindow* window;
   WindowTree* initiator;
   gfx::Rect revert_bounds;
 };
@@ skipping 815 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