Block shelf auto hidden when opt-in IME menu is shown.

ash/common/system/status_area_widget.cc

Index: ash/common/system/status_area_widget.cc
diff --git a/ash/common/system/status_area_widget.cc b/ash/common/system/status_area_widget.cc
index f9b41edbe1e24430e49b800b50c7fa85ac6d4f01..a415a98c4ff86d20b380ea82fd0ece6131cba32d 100644
--- a/ash/common/system/status_area_widget.cc
+++ b/ash/common/system/status_area_widget.cc
@@ -176,6 +176,9 @@ bool StatusAreaWidget::ShouldShowShelf() const {
 #if defined(OS_CHROMEOS)
   if (palette_tray_ && palette_tray_->ShouldBlockShelfAutoHide())
     return true;
+
+  if (ime_menu_tray_ && ime_menu_tray_->ShouldBlockShelfAutoHide())
+    return true;
 #endif
 
   if (!wm_shelf_->IsVisible())