is_valid_handle    87 ui/surface/transport_dib_gtk.cc bool TransportDIB::is_valid_handle(Handle dib) {
is_valid_handle    56 ui/surface/transport_dib_posix.cc bool TransportDIB::is_valid_handle(Handle dib) {
is_valid_handle    57 ui/surface/transport_dib_win.cc bool TransportDIB::is_valid_handle(Handle dib) {