DesktopAura: Track windows "owned" via the DesktopWindowTreeHost

ui/views/widget/desktop_aura/desktop_window_tree_host_x11.cc

 // Copyright (c) 2012 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 "ui/views/widget/desktop_aura/desktop_window_tree_host_x11.h"
 
 #include <X11/extensions/shape.h>
 #include <X11/extensions/XInput2.h>
 #include <X11/Xatom.h>
 #include <X11/Xregion.h>
@@ skipping 1524 matching lines @@
 
   // If we have a parent, record the parent/child relationship. We use this
   // data during destruction to make sure that when we try to close a parent
   // window, we also destroy all child windows.
   if (params.parent && params.parent->GetHost()) {
     XID parent_xid =
         params.parent->GetHost()->GetAcceleratedWidget();
     window_parent_ = GetHostForXID(parent_xid);
     DCHECK(window_parent_);
     window_parent_->window_children_.insert(this);
+    wm::AddTransientChild(params.parent, content_window_);
   }
 
   // If we have a delegate which is providing a default window icon, use that
   // icon.
   gfx::ImageSkia* window_icon =
       ViewsDelegate::GetInstance()
           ? ViewsDelegate::GetInstance()->GetDefaultWindowIcon()
           : NULL;
   if (window_icon) {
     SetWindowIcons(gfx::ImageSkia(), *window_icon);
@@ skipping 802 matching lines @@
 
 // static
 DesktopWindowTreeHost* DesktopWindowTreeHost::Create(
     internal::NativeWidgetDelegate* native_widget_delegate,
     DesktopNativeWidgetAura* desktop_native_widget_aura) {
   return new DesktopWindowTreeHostX11(native_widget_delegate,
                                       desktop_native_widget_aura);
 }
 
 }  // namespace views