~$ chromium-browser
[21074:21074:0926/233228:ERROR:browser_main_loop.cc(189)] GTK theme error: Unable to locate theme engine in module_path: "pixmap",
[21074:21074:0926/233228:ERROR:browser_main_loop.cc(189)] GTK theme error: Unable to locate theme engine in module_path: "pixmap",
[21074:21074:0926/233228:ERROR:browser_main_loop.cc(189)] GTK theme error: Unable to locate theme engine in module_path: "pixmap",
[21074:21074:0926/233228:ERROR:browser_main_loop.cc(189)] GTK theme error: Unable to locate theme engine in module_path: "pixmap",
[21074:21074:0926/233228:ERROR:browser_main_loop.cc(189)] GTK theme error: Unable to locate theme engine in module_path: "pixmap",
ATTENTION: default value of option force_s3tc_enable overridden by environment.
[21074:21074:0926/233235:ERROR:desktop_window_tree_host_x11.cc(1478)] Not implemented reached in void views::DesktopWindowTreeHostX11::MapWindow(ui::WindowShowState)
[21074:21138:0926/233539:FATAL:url_request.cc(709)] Trying to send secure referrer for insecure load
Aborted