diff --git a/core/modules/simpletest/src/BrowserTestBase.php b/core/modules/simpletest/src/BrowserTestBase.php
index 4224421..e0ece50 100644
--- a/core/modules/simpletest/src/BrowserTestBase.php
+++ b/core/modules/simpletest/src/BrowserTestBase.php
@@ -12,8 +12,6 @@
 use Behat\Mink\Exception\Exception;
 use Behat\Mink\Mink;
 use Behat\Mink\Session;
-use Drupal\Component\Utility\Crypt;
-use Drupal\Component\Utility\Random;
 use Drupal\Component\Utility\SafeMarkup;
 use Drupal\Core\Cache\Cache;
 use Drupal\Core\Database\ConnectionNotDefinedException;
@@ -52,6 +50,7 @@
  */
 abstract class BrowserTestBase extends \PHPUnit_Framework_TestCase {
 
+  use RandomGeneratorTrait;
   use SessionTestTrait;
 
   /**
@@ -147,13 +146,6 @@
   protected $configImporter;
 
   /**
-   * The random data generator.
-   *
-   * @var \Drupal\Component\Utility\Random
-   */
-  protected $randomGenerator;
-
-  /**
    * The profile to install as a basis for testing.
    *
    * @var string
@@ -573,69 +565,6 @@ protected function drupalCreateRole(array $permissions, $rid = NULL, $name = NUL
   }
 
   /**
-   * Gets the random generator for the utility methods.
-   *
-   * @return \Drupal\Component\Utility\Random
-   *   The random generator
-   */
-  protected function getRandomGenerator() {
-    if (!is_object($this->randomGenerator)) {
-      $this->randomGenerator = new Random();
-    }
-    return $this->randomGenerator;
-  }
-
-  /**
-   * Generates a unique random string containing letters and numbers.
-   *
-   * Do not use this method when testing unvalidated user input. Instead, use
-   * \Drupal\simpletest\BrowserTestBase::randomString().
-   *
-   * @param int $length
-   *   (optional) Length of random string to generate.
-   *
-   * @return string
-   *   Randomly generated unique string.
-   *
-   * @see \Drupal\Component\Utility\Random::name()
-   */
-  public function randomMachineName($length = 8) {
-    return $this->getRandomGenerator()->name($length, TRUE);
-  }
-
-  /**
-   * Generates a pseudo-random string of ASCII characters of codes 32 to 126.
-   *
-   * Do not use this method when special characters are not possible (e.g., in
-   * machine or file names that have already been validated); instead, use
-   * \Drupal\simpletest\TestBase::randomMachineName(). If $length is greater
-   * than 2 the random string will include at least one ampersand ('&')
-   * character to ensure coverage for special characters and avoid the
-   * introduction of random test failures.
-   *
-   * @param int $length
-   *   (optional) Length of random string to generate.
-   *
-   * @return string
-   *   Pseudo-randomly generated unique string including special characters.
-   *
-   * @see \Drupal\Component\Utility\Random::string()
-   */
-  public function randomString($length = 8) {
-    if ($length < 3) {
-      return $this->getRandomGenerator()->string($length, TRUE, array($this, 'randomStringValidate'));
-    }
-
-    // To prevent the introduction of random test failures, ensure that the
-    // returned string contains a character that needs to be escaped in HTML by
-    // injecting an ampersand into it.
-    $replacement_pos = floor($length / 2);
-    // Remove 1 from the length to account for the ampersand character.
-    $string = $this->getRandomGenerator()->string($length - 1, TRUE, array($this, 'randomStringValidate'));
-    return substr_replace($string, '&', $replacement_pos, 0);
-  }
-
-  /**
    * Checks whether a given list of permission names is valid.
    *
    * @param array $permissions