content: Remove views dependency.

services/ui/public/cpp/lib/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 147 matching lines @@
 }
 
 bool OwnsWindowOrIsRoot(Window* window) {
   return OwnsWindow(window->window_tree(), window) || IsClientRoot(window);
 }
 
 void EmptyEmbedCallback(bool result) {}
 
 }  // namespace
 
+const char kWindowForAcceleratedWidget[] = "__UI_WINDOW_ACCELERATED_WIDGET__";
+
 ////////////////////////////////////////////////////////////////////////////////
 // Window, public:
 
 void Window::Destroy() {
   if (!OwnsWindowOrIsRoot(this))
     return;
 
   if (client_)
     client_->DestroyWindow(this);
   while (!children_.empty()) {
@@ skipping 722 matching lines @@
     notifier->NotifyWindowReordered();
 
   return true;
 }
 
 // static
 Window** Window::GetStackingTarget(Window* window) {
   return &window->stacking_target_;
 }
 }  // namespace ui