Add always-on-top property to app windows

ui/views/widget/native_widget_win.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/native_widget_win.h"
 
 #include <dwmapi.h>
 #include <shellapi.h>
 
 #include <algorithm>
@@ skipping 316 matching lines @@
 }
 
 bool NativeWidgetWin::IsActive() const {
   return message_handler_->IsActive();
 }
 
 void NativeWidgetWin::SetAlwaysOnTop(bool on_top) {
   message_handler_->SetAlwaysOnTop(on_top);
 }
 
+bool NativeWidgetWin::IsAlwaysOnTop() const {
+  return message_handler_->IsAlwaysOnTop();
+}
+
 void NativeWidgetWin::Maximize() {
   message_handler_->Maximize();
 }
 
 void NativeWidgetWin::Minimize() {
   message_handler_->Minimize();
 }
 
 bool NativeWidgetWin::IsMaximized() const {
   return message_handler_->IsMaximized();
@@ skipping 707 matching lines @@
 // static
 bool NativeWidgetPrivate::IsTouchDown() {
   // This currently isn't necessary because we're not generating touch events on
   // windows.  When we do, this will need to be updated.
   return false;
 }
 
 }  // namespace internal
 
 }  // namespace views