Cleanup shelf initialization and observation.

ash/mus/shelf_delegate_mus.cc

 // Copyright 2016 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/mus/shelf_delegate_mus.h"
 
 #include "ash/shelf/shelf.h"
 #include "ash/shelf/shelf_item_delegate.h"
 #include "ash/shelf/shelf_item_delegate_manager.h"
 #include "ash/shelf/shelf_layout_manager.h"
@@ skipping 112 matching lines @@
       aura::GetMusWindow(status_widget->GetNativeWindow());
   gfx::Size status_size = status_widget->GetWindowBoundsInScreen().size();
   status_window->SetSharedProperty<gfx::Size>(
       mus::mojom::WindowManager::kPreferredSize_Property, status_size);
 }
 
 void ShelfDelegateMus::OnShelfDestroyed(Shelf* shelf) {
   NOTIMPLEMENTED();
 }
 
+void ShelfDelegateMus::OnShelfAlignmentChanged(Shelf* shelf) {
+  NOTIMPLEMENTED();
+}
+
+void ShelfDelegateMus::OnShelfAutoHideBehaviorChanged(Shelf* shelf) {
+  NOTIMPLEMENTED();
+}
+
 ShelfID ShelfDelegateMus::GetShelfIDForAppID(const std::string& app_id) {
   NOTIMPLEMENTED();
   return 0;
 }
 
 bool ShelfDelegateMus::HasShelfIDToAppIDMapping(ShelfID id) const {
   NOTIMPLEMENTED();
   return false;
 }
 
@@ skipping 93 matching lines @@
   DCHECK_GE(index, 0);
   ShelfItems::const_iterator iter = model_->ItemByID(shelf_id);
   DCHECK(iter != model_->items().end());
   ShelfItem item = *iter;
   item.status = has_focus ? STATUS_ACTIVE : STATUS_RUNNING;
   model_->Set(index, item);
 }
 
 }  // namespace sysui
 }  // namespace ash