Add ARC++ kiosk menu items and ability to start kiosk session.

chrome/browser/ui/ash/chrome_shell_delegate.cc

Index: chrome/browser/ui/ash/chrome_shell_delegate.cc
diff --git a/chrome/browser/ui/ash/chrome_shell_delegate.cc b/chrome/browser/ui/ash/chrome_shell_delegate.cc
index 96f7ad8c785dcd671193f528481026100f707216..9fd2bb755073c46dc979373d9170726e86acd824 100644
--- a/chrome/browser/ui/ash/chrome_shell_delegate.cc
+++ b/chrome/browser/ui/ash/chrome_shell_delegate.cc
@@ -441,7 +441,7 @@ ui::MenuModel* ChromeShellDelegate::CreateContextMenu(
     const ash::ShelfItem* item) {
   DCHECK(shelf_delegate_);
   // Don't show context menu for exclusive app runtime mode.
-  if (chrome::IsRunningInAppMode())
+  if (chrome::IsRunningInAppMode() || chrome::IsRunningInAndroidAppMode())
     return nullptr;
 
   return LauncherContextMenu::Create(shelf_delegate_, item, wm_shelf);