Add ImeMenuTray element.

ash/test/test_system_tray_delegate.h

Index: ash/test/test_system_tray_delegate.h
diff --git a/ash/test/test_system_tray_delegate.h b/ash/test/test_system_tray_delegate.h
index f83022fbdcb49429054d1d3d1e733677752e70ed..2ef4a22d05dce0e85e3e5506283a2cd41697aa7a 100644
--- a/ash/test/test_system_tray_delegate.h
+++ b/ash/test/test_system_tray_delegate.h
@@ -55,12 +55,16 @@ class TestSystemTrayDelegate : public DefaultSystemTrayDelegate {
   bool GetSessionStartTime(base::TimeTicks* session_start_time) override;
   bool GetSessionLengthLimit(base::TimeDelta* session_length_limit) override;
   void SignOut() override;
+  void GetCurrentIME(IMEInfo* info) override;
+
+  void SetCurrentIME(IMEInfo info);
 
  private:
   bool should_show_display_notification_;
   LoginStatus login_status_;
   base::TimeDelta session_length_limit_;
   bool session_length_limit_set_;
+  IMEInfo current_ime_;
 
   DISALLOW_COPY_AND_ASSIGN(TestSystemTrayDelegate);
 };