mash: Preliminary support for shelf auto-hide

ash/system/web_notification/ash_popup_alignment_delegate.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 "ash/system/web_notification/ash_popup_alignment_delegate.h"
 
 #include "ash/display/window_tree_host_manager.h"
 #include "ash/screen_util.h"
 #include "ash/shelf/shelf_constants.h"
 #include "ash/shelf/shelf_layout_manager.h"
@@ skipping 113 matching lines @@
 void AshPopupAlignmentDelegate::OnDisplayWorkAreaInsetsChanged() {
   UpdateWorkArea();
 }
 
 void AshPopupAlignmentDelegate::WillChangeVisibilityState(
     ShelfVisibilityState new_state) {
   UpdateWorkArea();
 }
 
 void AshPopupAlignmentDelegate::OnAutoHideStateChanged(
+    ShelfLayoutManager* layout_manager,
     ShelfAutoHideState new_state) {
   UpdateWorkArea();
 }
 
 void AshPopupAlignmentDelegate::OnDisplayAdded(
     const display::Display& new_display) {}
 
 void AshPopupAlignmentDelegate::OnDisplayRemoved(
     const display::Display& old_display) {}
 
 void AshPopupAlignmentDelegate::OnDisplayMetricsChanged(
     const display::Display& display,
     uint32_t metrics) {
   if (GetCurrentDisplay().id() == display.id())
     UpdateWorkArea();
 }
 
 }  // namespace ash