Added default implementations of GetAcceleratorForCommandId.

ui/message_center/views/notifier_settings_view.cc

Index: ui/message_center/views/notifier_settings_view.cc
diff --git a/ui/message_center/views/notifier_settings_view.cc b/ui/message_center/views/notifier_settings_view.cc
index 2f5afe278e4bdfe99984f7cd036e192f9c5dbb23..10a8ab47507f69da9cffe1ef62ecd4ee47c5b9a2 100644
--- a/ui/message_center/views/notifier_settings_view.cc
+++ b/ui/message_center/views/notifier_settings_view.cc
@@ -217,8 +217,6 @@ class NotifierGroupMenuModel : public ui::SimpleMenuModel,
   // ui::SimpleMenuModel::Delegate:
   bool IsCommandIdChecked(int command_id) const override;
   bool IsCommandIdEnabled(int command_id) const override;
-  bool GetAcceleratorForCommandId(int command_id,
-                                  ui::Accelerator* accelerator) const override;
   void ExecuteCommand(int command_id, int event_flags) override;
 
  private:
@@ -255,12 +253,6 @@ bool NotifierGroupMenuModel::IsCommandIdEnabled(int command_id) const {
   return true;
 }
 
-bool NotifierGroupMenuModel::GetAcceleratorForCommandId(
-    int command_id,
-    ui::Accelerator* accelerator) const {
-  return false;
-}
-
 void NotifierGroupMenuModel::ExecuteCommand(int command_id, int event_flags) {
   if (!notifier_settings_provider_)
     return;