Check the ADMINFILES_BROWSER_VIEWS setting and return a list of
    instantiated browser views that have the necessary
    dependencies/configuration to run.

def get_enabled_browsers():
    """
    Check the ADMINFILES_BROWSER_VIEWS setting and return a list of
    instantiated browser views that have the necessary
    dependencies/configuration to run.

    """
    global _enabled_browsers_cache
    if _enabled_browsers_cache is not None:
        return _enabled_browsers_cache
    enabled = []
    for browser_path in settings.ADMINFILES_BROWSER_VIEWS:
        try:
            view_class = import_browser(browser_path)
        except ImportError:
            continue
        if not issubclass(view_class, BaseView):
            continue
        browser = view_class
        try:
            browser.check()
        except DisableView:
            continue
        enabled.append(browser)
    _enabled_browsers_cache = enabled
    return enabled