Makes mus not bring window to front on activation changes

services/ui/public/cpp/window.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/public/cpp/window.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <set>
@@ skipping 862 matching lines @@
 }
 
 // static
 void Window::ReorderWithoutNotification(Window* window,
                                         Window* relative,
                                         mojom::OrderDirection direction) {
   ReorderImpl(window, relative, direction, nullptr);
 }
 
 // static
-// Returns true if the order actually changed.
 bool Window::ReorderImpl(Window* window,
                          Window* relative,
                          mojom::OrderDirection direction,
                          OrderChangedNotifier* notifier) {
   DCHECK(relative);
   DCHECK_NE(window, relative);
   DCHECK_EQ(window->parent(), relative->parent());
   DCHECK(window->parent());
 
   if (!AdjustStackingForTransientWindows(&window, &relative, &direction,
@@ skipping 29 matching lines @@
     notifier->NotifyWindowReordered();
 
   return true;
 }
 
 // static
 Window** Window::GetStackingTarget(Window* window) {
   return &window->stacking_target_;
 }
 }  // namespace ui