Reset HoverHighlightView state before re-populating

ash/system/network/network_list.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/system/network/network_list.h"
 
 #include <memory>
 
 #include "ash/shell.h"
 #include "ash/shell_port.h"
@@ skipping 678 matching lines @@
 }
 
 void NetworkListView::UpdateNetworkChild(int index, const NetworkInfo* info) {
   HoverHighlightView* network_view = nullptr;
   NetworkGuidMap::const_iterator found = network_guid_map_.find(info->guid);
   if (found == network_guid_map_.end()) {
     network_view = CreateViewForNetwork(*info);
   } else {
     network_view = found->second;
     if (NeedUpdateViewForNetwork(*info)) {
-      network_view->RemoveAllChildViews(true);
+      network_view->Reset();
       UpdateViewForNetwork(network_view, *info);
       network_view->Layout();
       network_view->SchedulePaint();
     }
   }
   PlaceViewAtIndex(network_view, index);
   if (info->disable)
     network_view->SetEnabled(false);
   network_map_[network_view] = info->guid;
   network_guid_map_[info->guid] = network_view;
@@ skipping 111 matching lines @@
   TrayPopupItemStyle style(TrayPopupItemStyle::FontStyle::DETAILED_VIEW_LABEL);
   style.SetupLabel(label);
   connection_warning->AddView(TriView::Container::CENTER, label);
 
   // Nothing to the right of the text.
   connection_warning->SetContainerVisible(TriView::Container::END, false);
   return connection_warning;
 }
 
 }  // namespace ash