Introduce RemoveRowTableModel interface, let GeolocationExceptionsTableModel derive from it.

chrome/browser/gtk/options/geolocation_content_exceptions_window.cc

 // Copyright (c) 2010 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 "chrome/browser/gtk/options/geolocation_content_exceptions_window.h"
 
 #include "app/l10n_util.h"
 #include "base/message_loop.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/geolocation/geolocation_content_settings_map.h"
@@ skipping 123 matching lines @@
   gtk_list_store_set(list_store_, iter, COL_ACTION,
                      WideToUTF8(action).c_str(), -1);
 }
 
 void GeolocationContentExceptionsWindow::UpdateButtonState() {
   int row_count = gtk_tree_model_iter_n_children(
       GTK_TREE_MODEL(list_store_), NULL);
 
   GeolocationExceptionsTableModel::Rows rows;
   GetSelectedRows(&rows);
-  gtk_widget_set_sensitive(remove_button_, model_->CanRemoveExceptions(rows));
+  gtk_widget_set_sensitive(remove_button_, model_->CanRemoveRows(rows));
   gtk_widget_set_sensitive(remove_all_button_, row_count > 0);
 }
 
 void GeolocationContentExceptionsWindow::GetSelectedRows(
     GeolocationExceptionsTableModel::Rows* rows) {
   std::set<int> indices;
   gtk_tree::GetSelectedIndices(treeview_selection_, &indices);
   for (std::set<int>::iterator i = indices.begin(); i != indices.end(); ++i)
     rows->insert(*i);
 }
 
 void GeolocationContentExceptionsWindow::Remove(GtkWidget* widget) {
   GeolocationExceptionsTableModel::Rows rows;
   GetSelectedRows(&rows);
-  model_->RemoveExceptions(rows);
+  model_->RemoveRows(rows);
   UpdateButtonState();
 }
 
 void GeolocationContentExceptionsWindow::RemoveAll(GtkWidget* widget) {
   model_->RemoveAll();
   UpdateButtonState();
 }
 
 void GeolocationContentExceptionsWindow::OnWindowDestroy(GtkWidget* widget) {
   instance = NULL;
   MessageLoop::current()->DeleteSoon(FROM_HERE, this);
 }
 
 void GeolocationContentExceptionsWindow::OnTreeSelectionChanged(
     GtkWidget* selection) {
   UpdateButtonState();
 }