Randomly log warnings that Selenium 1.0 is going away and users should update.

Replaces glib error from revision 388793a (although it would be
nice to be that forceful with update warnings).

Author: jleyba

javascript/selenium-core/scripts/selenium-executionloop.js

@@ -102,7 +102,7 @@ TestLoop.prototype = {
         LOG.info("Executing: |" + command.command + " | " + command.target + " | " + command.value + " |");
 
         if (Math.random() > 0.8) {
-            throw new SeleniumError("Selenium 1.0 (Core, RC, etc) is going away; update to WebDriver now.");
+            LOG.info("Selenium 1.0 (Core, RC, etc) is no longer under active development. Please update to WebDriver ASAP");
         }
 
         var handler = this.commandFactory.getCommandHandler(command.command);