Alert Android9 Browser Face Deformer.

[kuronyankotan]

Desktop Chrome71 browser is Working.
But Android 's Chrome has an alert.

This project of facesubstitution.html

if (webGLContext == null) {
 alert("Your browser does not seem to support WebGL. Unfortunately this face mask example depends on WebGL, so you'll have to try it in another browser. :(");
}

I'm stuck with the error here.

if (!webGLContext || !webGLContext.getExtension('OES_texture_float')) {

I think that the judgment here does not correspond to an Android device.
I deleted this judgment statement and it worked on Android as well.

Is there a good way to do it?