Clean up the WrenchMenuModel so that it uses SimpleMenu::Delegate.

chrome/browser/cocoa/toolbar_controller.h

Index: chrome/browser/cocoa/toolbar_controller.h
diff --git a/chrome/browser/cocoa/toolbar_controller.h b/chrome/browser/cocoa/toolbar_controller.h
index 68b57bfc8a2a02e90489510213bf7258875df3a0..43420ccf57d746e5969d0f406396a440906a375c 100644
--- a/chrome/browser/cocoa/toolbar_controller.h
+++ b/chrome/browser/cocoa/toolbar_controller.h
@@ -28,7 +28,7 @@ class LocationBar;
 class LocationBarViewMac;
 @class MenuButton;
 namespace ToolbarControllerInternal {
-class MenuDelegate;
+class WrenchAcceleratorDelegate;
 class NotificationBridge;
 }  // namespace ToolbarControllerInternal
 class Profile;
@@ -74,7 +74,8 @@ class WrenchMenuModel;
   // Lazily-instantiated model and delegate for the menu on the
   // wrench button.  Once visible, it will be non-null, but will not
   // reaped when the menu is hidden once it is initially shown.
-  scoped_ptr<ToolbarControllerInternal::MenuDelegate> menuDelegate_;
+  scoped_ptr<ToolbarControllerInternal::WrenchAcceleratorDelegate>
+      acceleratorDelegate_;
   scoped_ptr<WrenchMenuModel> wrenchMenuModel_;
 
   // Used for monitoring the optional toolbar button prefs.