AddWindowTreeHostForDisplay  272 ash/display/display_controller.cc   AddWindowTreeHostForDisplay(primary_candidate);
AddWindowTreeHostForDisplay  280 ash/display/display_controller.cc       aura::WindowTreeHost* host = AddWindowTreeHostForDisplay(display);
AddWindowTreeHostForDisplay  554 ash/display/display_controller.cc     aura::WindowTreeHost* host = AddWindowTreeHostForDisplay(display);
AddWindowTreeHostForDisplay  171 ash/display/display_controller.h   aura::WindowTreeHost* AddWindowTreeHostForDisplay(