Fixes possible crash in TableView

ui/views/controls/table/table_view.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 "ui/views/controls/table/table_view.h"
 
 #include <map>
 
 #include "base/auto_reset.h"
 #include "base/i18n/rtl.h"
@@ skipping 467 matching lines @@
   for (int i = 0; i < length; ++i)
     selection_model_.DecrementFrom(start);
   NumRowsChanged();
   // If the selection was empty and is no longer empty select the same visual
   // index.
   if (selection_model_.empty() && previously_selected_view_index != -1 &&
       RowCount()) {
     selection_model_.SetSelectedIndex(
         ViewToModel(std::min(RowCount() - 1, previously_selected_view_index)));
   }
+  if (!selection_model_.empty() && selection_model_.active() == -1)
+    selection_model_.set_active(FirstSelectedRow());
+  if (!selection_model_.empty() && selection_model_.anchor() == -1)
+    selection_model_.set_anchor(FirstSelectedRow());
   if (table_view_observer_)
     table_view_observer_->OnSelectionChanged();
 }
 
 gfx::Point TableView::GetKeyboardContextMenuLocation() {
   int first_selected = FirstSelectedRow();
   gfx::Rect vis_bounds(GetVisibleBounds());
   int y = vis_bounds.height() / 2;
   if (first_selected != -1) {
     gfx::Rect cell_bounds(GetRowBounds(first_selected));
@@ skipping 441 matching lines @@
   if (tooltip)
     *tooltip = text;
   if (tooltip_origin) {
     tooltip_origin->SetPoint(cell_bounds.x(),
                              cell_bounds.y() + kTextVerticalPadding);
   }
   return true;
 }
 
 }  // namespace views