Make content settings map updates live.

chrome/browser/content_exceptions_table_model.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/content_exceptions_table_model.h"
 
 #include "app/l10n_util.h"
 #include "app/table_model_observer.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/host_content_settings_map.h"
 #include "grit/generated_resources.h"
 
 ContentExceptionsTableModel::ContentExceptionsTableModel(
     HostContentSettingsMap* map,
     ContentSettingsType type)
     : map_(map),
       content_type_(type),
       observer_(NULL) {
+  registrar_.Add(this, NotificationType::CONTENT_SETTINGS_CHANGED,
+                 NotificationService::AllSources());
+
   // Load the contents.
   map->GetSettingsForOneType(type, &entries_);
 }
 
 void ContentExceptionsTableModel::AddException(const std::string& host,
                                         ContentSetting setting) {
   entries_.push_back(HostContentSettingsMap::HostSettingPair(host, setting));
   map_->SetContentSetting(host, content_type_, setting);
   if (observer_)
     observer_->OnItemsAdded(RowCount() - 1, 1);
@@ skipping 53 matching lines @@
     default:
       NOTREACHED();
   }
 
   return std::wstring();
 }
 
 void ContentExceptionsTableModel::SetObserver(TableModelObserver* observer) {
   observer_ = observer;
 }
+
+void ContentExceptionsTableModel::Observe(
+    NotificationType type,
+    const NotificationSource& source,
+    const NotificationDetails& details) {
+  // XXX: check the notification is for the right type
+fprintf(stderr, "observing\n");
+  // Reload the contents.
+  map_->GetSettingsForOneType(content_type_, &entries_);
+
+  if (observer_) {
+fprintf(stderr, "notifying\n");
+    observer_->OnModelChanged();
+  }
+}