SetExternalAsPrimary  342 ash/touch/touch_observer_hud_unittest.cc   SetExternalAsPrimary();
SetExternalAsPrimary  395 ash/touch/touch_observer_hud_unittest.cc   SetExternalAsPrimary();
SetExternalAsPrimary  451 ash/touch/touch_observer_hud_unittest.cc   SetExternalAsPrimary();