mash: Preliminary support for shelf auto-hide

ash/system/status_area_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 "ash/system/status_area_widget.h"
 
 #include "ash/root_window_controller.h"
 #include "ash/shelf/shelf_layout_manager.h"
 #include "ash/shelf/shelf_widget.h"
 #include "ash/shell.h"
@@ skipping 115 matching lines @@
 #endif
   overview_button_tray_->SchedulePaint();
 }
 
 void StatusAreaWidget::OnNativeWidgetActivationChanged(bool active) {
   Widget::OnNativeWidgetActivationChanged(active);
   if (active)
     status_area_widget_delegate_->SetPaneFocusAndFocusDefault();
 }
 
+void StatusAreaWidget::OnMouseEvent(ui::MouseEvent* event) {
+  Widget::OnMouseEvent(event);
+  if (Shell::GetInstance()->in_mus() && shelf_widget_->shelf_layout_manager())
+    shelf_widget_->shelf_layout_manager()->UpdateAutoHideForMouseEvent(event);
+}
+
+void StatusAreaWidget::OnGestureEvent(ui::GestureEvent* event) {
+  Widget::OnGestureEvent(event);
+  if (Shell::GetInstance()->in_mus() && shelf_widget_->shelf_layout_manager())
+    shelf_widget_->shelf_layout_manager()->UpdateAutoHideForGestureEvent(event);
+}
+
 void StatusAreaWidget::AddSystemTray() {
   system_tray_ = new SystemTray(this);
   status_area_widget_delegate_->AddTray(system_tray_);
 }
 
 void StatusAreaWidget::AddWebNotificationTray() {
   web_notification_tray_ = new WebNotificationTray(this);
   status_area_widget_delegate_->AddTray(web_notification_tray_);
 }
 
@@ skipping 47 matching lines @@
     web_notification_tray_->UpdateAfterLoginStatusChange(login_status);
 #if defined(OS_CHROMEOS)
   if (logout_button_tray_)
     logout_button_tray_->UpdateAfterLoginStatusChange(login_status);
 #endif
   if (overview_button_tray_)
     overview_button_tray_->UpdateAfterLoginStatusChange(login_status);
 }
 
 }  // namespace ash