Fix button-pressed handling in ImeDetailedView

ash/common/system/ime/tray_ime_chromeos.cc

Index: ash/common/system/ime/tray_ime_chromeos.cc
diff --git a/ash/common/system/ime/tray_ime_chromeos.cc b/ash/common/system/ime/tray_ime_chromeos.cc
index 1ffbf9425c0329059c612d067b66d9869943779d..9d7dbb364a9e7a738fa17ae43e72ff0f04cca213 100644
--- a/ash/common/system/ime/tray_ime_chromeos.cc
+++ b/ash/common/system/ime/tray_ime_chromeos.cc
@@ -153,6 +153,7 @@ class IMEDetailedView : public ImeListView {
 
   void HandleButtonPressed(views::Button* sender,
                            const ui::Event& event) override {
+    ImeListView::HandleButtonPressed(sender, event);
     if (sender == settings_button_)
       ShowSettings();
   }