It looks chromium tries to open libGLESv2.so only when visiting WebGL web pages like this one: http://www.chromeexperiments.com/webgl
(chromium crashes looking for libGLESv2.so when "Launch experiment" button is clicked). The WebGL is OpenGLES 2.0.
The question is who failed: Google for not providing wrapper in chromium to OpenGL on desktops or Nvidia for not providing OpenGL ES 2.0 library on Linux. Or me having Geforce 8200 with support for OpenGL 3.3 only.
Same problem in Gentoo:
Can someone having Geforce with OpenGL 4.1 can confirm that symlinking libGLESv2.so to Nvidia's libGL.so makes chromium correctly display WebGL?
Chromium should not crash when libGLESv2.so is not present.