fix chromium:ANGLE Display::initialize error 12289

Author: yunshansimon

overlay-rpi4/make.conf

@@ -15,7 +15,7 @@ USE="${USE} -tpm tpm2_simulator tpm2 vtpm_proxy tpm2_simulator_manufacturer disa
 USE="${USE} unibuild has_chromeos_config_bsp"
 USE="${USE} -nacl mosys_platform_generic selinux_experimental"
 USE="${USE} -diagnostics-minidiag -secagent"
-CHROME_DEV_FLAGS="${CHROME_DEV_FLAGS} --disable-features=CrostiniUseDlc"
+CHROME_DEV_FLAGS="${CHROME_DEV_FLAGS} --disable-features=CrostiniUseDlc --use-gl=egl"
 
 #uncomment nextline to use kiosk demo
 #USE="${USE} kiosk_demo"