Make content settings map updates live.

chrome/browser/content_exceptions_table_model.h

Index: chrome/browser/content_exceptions_table_model.h
diff --git a/chrome/browser/content_exceptions_table_model.h b/chrome/browser/content_exceptions_table_model.h
index 9ade4d856830a77e5e96e1d6a68dda55d5daaafb..3f59d96172ffd5eed70eea8a5db6fb350572fcfb 100644
--- a/chrome/browser/content_exceptions_table_model.h
+++ b/chrome/browser/content_exceptions_table_model.h
@@ -10,9 +10,12 @@
 #include "app/table_model.h"
 #include "chrome/common/content_settings.h"
 #include "chrome/common/content_settings_types.h"
+#include "chrome/common/notification_registrar.h"
+#include "chrome/common/notification_service.h"
 #include "chrome/browser/host_content_settings_map.h"
 
-class ContentExceptionsTableModel : public TableModel {
+class ContentExceptionsTableModel : public TableModel,
+                                    public NotificationObserver {
  public:
   ContentExceptionsTableModel(HostContentSettingsMap* map,
                               ContentSettingsType content_type);
@@ -42,11 +45,16 @@ class ContentExceptionsTableModel : public TableModel {
   virtual std::wstring GetText(int row, int column_id);
   virtual void SetObserver(TableModelObserver* observer);
 
+  // NotificationObserver overrides:
+  virtual void Observe(NotificationType type,
+                       const NotificationSource& source,
+                       const NotificationDetails& details);
  private:
   HostContentSettingsMap* map_;
   ContentSettingsType content_type_;
   HostContentSettingsMap::SettingsForOneType entries_;
   TableModelObserver* observer_;
+  NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentExceptionsTableModel);
 };