[ash-md] Adjusts layout of lists with sticky header rows to match specs

ash/common/system/tray/tri_view.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/common/system/tray/tri_view.h"
 
 #include "ash/common/system/tray/size_range_layout.h"
 #include "base/logging.h"
 #include "ui/views/border.h"
 #include "ui/views/layout/box_layout.h"
@@ skipping 108 matching lines @@
     if (details.is_add) {
       DCHECK(false)
           << "Child views should not be added directly. They should be added "
              "using TriView::AddView().";
     } else {
       DCHECK(false) << "Container views should not be removed.";
     }
   }
 }
 
+const char* TriView::GetClassName() const {
+  return "TriView";
+}
+
 views::View* TriView::GetContainer(Container container) {
   return child_at(static_cast<int>(container));
 }
 
 SizeRangeLayout* TriView::GetLayoutManager(Container container) {
   switch (container) {
     case Container::START:
       return start_container_layout_manager_;
     case Container::CENTER:
       return center_container_layout_manager_;
     case Container::END:
       return end_container_layout_manager_;
   }
   // Required for some compilers.
   NOTREACHED();
   return nullptr;
 }
 
 }  // namespace ash