Issue 4353 - Remove non standard for each syntax

utils/jstypes.js

-/**
- * This file presents various methods to create a JS typing system.
- */
-
-function divine_inheritance(clazz, constants) {
-  let aliases = {};
-  for (let c of constants) {
-    aliases[c.name] = c.init;
-  }
-
-  // First, do we have a QueryInterface variable?
-  if ("QueryInterface" in clazz.variables) {
-    // Yes, it's a function, but the variable means that we found a XPCOMUtils
-    // utility. This'll be easy!
-    let xpcom = clazz.variables.QueryInterface.init;
-    assert(xpcom.op == JSOP_CALL && xpcom.kids[0].atom == "generateQI");
-
-    if (!clazz.inherits)
-      clazz.inherits = [];
-    for (let iface of xpcom.kids[1].kids)
-      clazz.inherits.push(iface.atom);
-    return;
-  }
-
-  if ("QueryInterface" in clazz.functions) {
-    if (!clazz.inherits)
-      clazz.inherits = [];
-    function findInterfaces(ast) {
-      if (ast.op == JSOP_GETPROP && ast.kids[0]) {
-        let check = ast.kids[0];
-        if (check.atom == "interfaces" && check.kids[0] &&
-            check.kids[0].atom == "Components") {
-          clazz.inherits.push(ast.atom);
-        }
-      }
-    }
-    visit(clazz.functions.QueryInterface.body, findInterfaces, aliases);
-    return;
-  }
-}