Drupal : Using admin theme for feeds importer

myfeature.module

<?php 

/**
* Implements hook_admin_paths().
*/
function myfeature_admin_paths() {
  $paths = array(
    'import' => TRUE,
    'import/*' => TRUE,
    'node/*/import' => TRUE,
    'node/*/delete-items' => TRUE,
    'node/*/log' => TRUE,
  );
  return $paths;
}