Add always-on-top property to app windows

ui/views/widget/widget.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/widget.h"
 
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 163 matching lines @@
       saved_show_state_(ui::SHOW_STATE_DEFAULT),
       focus_on_creation_(true),
       is_top_level_(false),
       native_widget_initialized_(false),
       native_widget_destroyed_(false),
       is_mouse_button_pressed_(false),
       is_touch_down_(false),
       last_mouse_event_was_move_(false),
       auto_release_capture_(true),
       root_layers_dirty_(false),
-      movement_disabled_(false) {
+      movement_disabled_(false),
+      is_always_on_top_(false) {
 }
 
 Widget::~Widget() {
   DestroyRootView();
   if (ownership_ == InitParams::WIDGET_OWNS_NATIVE_WIDGET) {
     delete native_widget_;
   } else {
     DCHECK(native_widget_destroyed_)
         << "Destroying a widget with a live native widget. "
         << "Widget probably should use WIDGET_OWNS_NATIVE_WIDGET ownership.";
@@ skipping 196 matching lines @@
     UpdateWindowTitle();
     SetInitialBounds(params.bounds);
     if (params.show_state == ui::SHOW_STATE_MAXIMIZED)
       Maximize();
     else if (params.show_state == ui::SHOW_STATE_MINIMIZED)
       Minimize();
   } else if (params.delegate) {
     SetContentsView(params.delegate->GetContentsView());
     SetInitialBoundsForFramelessWindow(params.bounds);
   }
+  is_always_on_top_ = native_widget_->IsAlwaysOnTop();
   native_widget_initialized_ = true;
 }
 
 // Unconverted methods (see header) --------------------------------------------
 
 gfx::NativeView Widget::GetNativeView() const {
   return native_widget_->GetNativeView();
 }
 
 gfx::NativeWindow Widget::GetNativeWindow() const {
@@ skipping 238 matching lines @@
 bool Widget::IsActive() const {
   return native_widget_->IsActive();
 }
 
 void Widget::DisableInactiveRendering() {
   SetInactiveRenderingDisabled(true);
 }
 
 void Widget::SetAlwaysOnTop(bool on_top) {
   native_widget_->SetAlwaysOnTop(on_top);
+  is_always_on_top_ = native_widget_->IsAlwaysOnTop();
+}
+
+bool Widget::IsAlwaysOnTop() const {
+  return is_always_on_top_;
 }
 
 void Widget::Maximize() {
   native_widget_->Maximize();
 }
 
 void Widget::Minimize() {
   native_widget_->Minimize();
 }
 
@@ skipping 758 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // internal::NativeWidgetPrivate, NativeWidget implementation:
 
 internal::NativeWidgetPrivate* NativeWidgetPrivate::AsNativeWidgetPrivate() {
   return this;
 }
 
 }  // namespace internal
 }  // namespace views