Which library is used to render google maps? OpenGL ES version 2 WebGL ES version 2 WebGL ES version 5 OpenGL ES version 5 code example

Example: what is WebGL

enables web content to use an API based on OpenGL ES 2.0 
to perform 3D rendering in an HTML  in browsers 
use  shader code that is executed on a computer's Graphics Processing Unit (GPU)
elements can be mixed with other HTML elements and 
COMPOSITED with other parts of the page or page background.