Don't show the Autohide Shelf menu option when it's unsupported.

chrome/browser/ui/ash/launcher/launcher_context_menu.cc

Index: chrome/browser/ui/ash/launcher/launcher_context_menu.cc
diff --git a/chrome/browser/ui/ash/launcher/launcher_context_menu.cc b/chrome/browser/ui/ash/launcher/launcher_context_menu.cc
index 36d7d6e272bb32a370cf8e9de43ee757a34d8b03..1ffa79c149b2143b0f48e90d7c9971c70e9066e7 100644
--- a/chrome/browser/ui/ash/launcher/launcher_context_menu.cc
+++ b/chrome/browser/ui/ash/launcher/launcher_context_menu.cc
@@ -171,8 +171,12 @@ void LauncherContextMenu::Init() {
   // fullscreen because it is confusing when the preference appears not to
   // apply.
   if (!IsFullScreenMode()) {
-    AddCheckItemWithStringId(MENU_AUTO_HIDE,
-                             IDS_ASH_SHELF_CONTEXT_MENU_AUTO_HIDE);
+    if ((controller_->GetShelfAutoHideBehavior(root_window_) !=
+             ash::SHELF_AUTO_HIDE_BEHAVIOR_NEVER) ||

[Mr4D (OOO till 08-26), 2014/01/10 21:55:34]

Please remove the first check. since that is not needed. Either the user is
allowed to change or not. No matter what this flag says.

+           controller_->CanUserModifyShelfAutoHideBehavior(root_window_)) {
+      AddCheckItemWithStringId(MENU_AUTO_HIDE,
+                               IDS_ASH_SHELF_CONTEXT_MENU_AUTO_HIDE);
+    }
   }
   if (ash::ShelfWidget::ShelfAlignmentAllowed()) {
     AddSubMenuWithStringId(MENU_ALIGNMENT_MENU,