The Tor Browser / file revision

 /* Any copyright is dedicated to the Public Domain.

    http://creativecommons.org/publicdomain/zero/1.0/ */

 /**

  * Tests if a program actor is sent when WebGL programs are linked,

  * and that the corresponding vertex and fragment actors can be retrieved.

  */

 function ifWebGLSupported() {

   let [target, debuggee, front] = yield initBackend(SIMPLE_CANVAS_URL);

   front.setup({ reload: true });

   let programActor = yield once(front, "program-linked");

   ok(programActor,

     "A program actor was sent along with the 'program-linked' notification.")

   let vertexShader = yield programActor.getVertexShader();

   ok(programActor,

     "A vertex shader actor was retrieved from the program actor.");

   let fragmentShader = yield programActor.getFragmentShader();

   ok(programActor,

     "A fragment shader actor was retrieved from the program actor.");

   yield removeTab(target.tab);

   finish();

 }