'file' not getting passed to ctools for browser plugins

It looks like there's some code that flattens the 'handler' part of the array (which is where ctools expects these definitions) that's clobbering the 'file' value. I'm too tired to look for it right now, maybe some time this week.

The definition:

  $plugins['media_browser_plugin'] = array(
    'title' => t('title'),
	'weight' => -10,
    'handler' => array(
      'path' => drupal_get_path('module', 'media_browser_plugin') . '/includes',
      'file' => 'MediaBrowserPlugin.inc',
      'class' => 'MediaBrowserPlugin',
    ),
    'access callback' => 'media_browser_plugin_access',
  );

and this is what is getting passed to ctools:

Array
(
    [title] => Video
    [handler] => Array
        (
            [path] => sites/all/modules/media_browser_plugin/includes
            [file] => MediaBrowserPlugin.inc
            [class] => MediaBrowserPlugin
        )

    [access callback] => media_browser_Plugin_access
    [module] => media_browser_plugin
    [name] => media_browser_plugin
    [path] => sites/all/modules/media_browser_plugin
    [file] => 
    [plugin module] => media
    [plugin type] => browser
)