[Mac] Minor tweaks to the Wrench menu.

chrome/browser/wrench_menu_model.h

Index: chrome/browser/wrench_menu_model.h
diff --git a/chrome/browser/wrench_menu_model.h b/chrome/browser/wrench_menu_model.h
index b7dc7241b5bb86d31f4ce669f40fddde93cf8081..473888d3852c7c9242dc9567f5f33ca619d0eafc 100644
--- a/chrome/browser/wrench_menu_model.h
+++ b/chrome/browser/wrench_menu_model.h
@@ -78,6 +78,9 @@ class WrenchMenuModel : public menus::SimpleMenuModel,
                        const NotificationSource& source,
                        const NotificationDetails& details);
 
+  // Getters.
+  Browser* browser() const { return browser_; }
+
  private:
   // Testing constructor used for mocking.
   friend class ::MockWrenchMenuModel;