Introduce incognito preference settings.

chrome/browser/ui/cocoa/extensions/extension_action_context_menu.h

Index: chrome/browser/ui/cocoa/extensions/extension_action_context_menu.h
diff --git a/chrome/browser/ui/cocoa/extensions/extension_action_context_menu.h b/chrome/browser/ui/cocoa/extensions/extension_action_context_menu.h
index e40388ff865292e95755419be6657c043227288d..f4340177b968ff709326ac5d981aef56d7833e67 100644
--- a/chrome/browser/ui/cocoa/extensions/extension_action_context_menu.h
+++ b/chrome/browser/ui/cocoa/extensions/extension_action_context_menu.h
@@ -21,6 +21,7 @@ class Profile;
 namespace extension_action_context_menu {
 
 class DevmodeObserver;
+class ProfileObserverBridge;
 
 }  // namespace extension_action_context_menu
 
@@ -41,6 +42,10 @@ class DevmodeObserver;
 
   // The observer used to listen for pref changed notifications.
   scoped_ptr<extension_action_context_menu::DevmodeObserver> observer_;
+  
+  // The observer used to reset |observer_| when the profile is destroyed.
+  scoped_ptr<extension_action_context_menu::ProfileObserverBridge>
+      profile_observer_;
 
   // Used to load the extension icon asynchronously on the I/O thread then show
   // the uninstall confirmation dialog.
@@ -55,6 +60,10 @@ class DevmodeObserver;
 // Show or hide the inspector menu item.
 - (void)updateInspectorItem;
 
+// Notifies the ExtensionActionContextMenu that the profile is is being
+// destroyed.
+- (void)invalidateProfile;
+
 @end
 
 typedef ExtensionActionContextMenu ExtensionActionContextMenuMac;