[Media Router] Don't show "Manage Cast Devices" in incognito mode.

chrome/browser/ui/toolbar/media_router_contextual_menu.cc

Index: chrome/browser/ui/toolbar/media_router_contextual_menu.cc
diff --git a/chrome/browser/ui/toolbar/media_router_contextual_menu.cc b/chrome/browser/ui/toolbar/media_router_contextual_menu.cc
index 5ff5bc2b8c43f6e34707a416ec01b50db2b5857b..684c733e063d844f76e56f6e981b96146a102f86 100644
--- a/chrome/browser/ui/toolbar/media_router_contextual_menu.cc
+++ b/chrome/browser/ui/toolbar/media_router_contextual_menu.cc
@@ -74,8 +74,10 @@ MediaRouterContextualMenu::MediaRouterContextualMenu(Browser* browser,
                                   GetChangeVisibilityTextId());
   menu_model_.AddSeparator(ui::NORMAL_SEPARATOR);
 #if defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_CHROMEOS)
-  menu_model_.AddItemWithStringId(IDC_MEDIA_ROUTER_MANAGE_DEVICES,
-                                  IDS_MEDIA_ROUTER_MANAGE_DEVICES);
+  if (!browser_->profile()->IsOffTheRecord()) {
+    menu_model_.AddItemWithStringId(IDC_MEDIA_ROUTER_MANAGE_DEVICES,
+                                    IDS_MEDIA_ROUTER_MANAGE_DEVICES);
+  }
 #endif
   menu_model_.AddCheckItemWithStringId(IDC_MEDIA_ROUTER_CLOUD_SERVICES_TOGGLE,
                                        IDS_MEDIA_ROUTER_CLOUD_SERVICES_TOGGLE);