diff --git a/core/modules/contextual/lib/Drupal/contextual/Tests/ContextualDynamicContextTest.php b/core/modules/contextual/lib/Drupal/contextual/Tests/ContextualDynamicContextTest.php
index 638ce15..9c2dcbb 100644
--- a/core/modules/contextual/lib/Drupal/contextual/Tests/ContextualDynamicContextTest.php
+++ b/core/modules/contextual/lib/Drupal/contextual/Tests/ContextualDynamicContextTest.php
@@ -135,22 +135,4 @@ protected function assertNoContextualLinkPlaceHolder($id) {
     $this->assertNoRaw('<div data-contextual-id="'. $id . '"></div>', format_string('Contextual link placeholder with id @id does not exist.', array('@id' => $id)));
   }
 
-  /**
-   * Get server-rendered contextual links for the given contextual link ids.
-   *
-   * @param array $ids
-   *   An array of contextual link ids.
-   * @param string $current_path
-   *   The Drupal path for the page for which the contextual links are rendered.
-   *
-   * @return string
-   *   The response body.
-   */
-  protected function renderContextualLinks($ids, $current_path) {
-    $post = array();
-    for ($i = 0; $i < count($ids); $i++) {
-      $post['ids[' . $i . ']'] = $ids[$i];
-    }
-    return $this->drupalPost('contextual/render', 'application/json', $post, array('query' => array('destination' => $current_path)));
-  }
 }
diff --git a/core/modules/node/lib/Drupal/node/Tests/Views/NodeContextualLinksTest.php b/core/modules/node/lib/Drupal/node/Tests/Views/NodeContextualLinksTest.php
index cf24cba..3aee396 100644
--- a/core/modules/node/lib/Drupal/node/Tests/Views/NodeContextualLinksTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/Views/NodeContextualLinksTest.php
@@ -56,45 +56,4 @@ public function testNodeContextualLinks() {
     $this->assertLink('Test contextual link', 0, 'The contextual link to the view was found.');
   }
 
-  /**
-   * Get server-rendered contextual links for the given contextual link ids.
-   *
-   * Copied from \Drupal\contextual\Tests\ContextualDynamicContextTest::renderContextualLinks().
-   *
-   * @param array $ids
-   *   An array of contextual link ids.
-   * @param string $current_path
-   *   The Drupal path for the page for which the contextual links are rendered.
-   *
-   * @return string
-   *   The response body.
-   */
-  protected function renderContextualLinks($ids, $current_path) {
-    // Build POST values.
-    $post = array();
-    for ($i = 0; $i < count($ids); $i++) {
-      $post['ids[' . $i . ']'] = $ids[$i];
-    }
-
-    // Serialize POST values.
-    foreach ($post as $key => $value) {
-      // Encode according to application/x-www-form-urlencoded
-      // Both names and values needs to be urlencoded, according to
-      // http://www.w3.org/TR/html4/interact/forms.html#h-17.13.4.1
-      $post[$key] = urlencode($key) . '=' . urlencode($value);
-    }
-    $post = implode('&', $post);
-
-    // Perform HTTP request.
-    return $this->curlExec(array(
-      CURLOPT_URL => url('contextual/render', array('absolute' => TRUE, 'query' => array('destination' => $current_path))),
-      CURLOPT_POST => TRUE,
-      CURLOPT_POSTFIELDS => $post,
-      CURLOPT_HTTPHEADER => array(
-        'Accept: application/json',
-        'Content-Type: application/x-www-form-urlencoded',
-      ),
-    ));
-  }
-
 }
diff --git a/core/modules/simpletest/lib/Drupal/simpletest/WebTestBase.php b/core/modules/simpletest/lib/Drupal/simpletest/WebTestBase.php
index 3da3e93..507332d 100644
--- a/core/modules/simpletest/lib/Drupal/simpletest/WebTestBase.php
+++ b/core/modules/simpletest/lib/Drupal/simpletest/WebTestBase.php
@@ -1778,6 +1778,27 @@ protected function drupalPost($path, $accept, array $post, $options = array()) {
   }
 
   /**
+   * Get server-rendered contextual links for the given contextual link ids.
+   *
+   * Requires that contextual.module is enabled to work correctly.
+   *
+   * @param array $ids
+   *   An array of contextual link ids.
+   * @param string $current_path
+   *   The Drupal path for the page for which the contextual links are rendered.
+   *
+   * @return string
+   *   The response body.
+   */
+  protected function renderContextualLinks($ids, $current_path) {
+    $post = array();
+    for ($i = 0; $i < count($ids); $i++) {
+      $post['ids[' . $i . ']'] = $ids[$i];
+    }
+    return $this->drupalPost('contextual/render', 'application/json', $post, array('query' => array('destination' => $current_path)));
+  }
+
+  /**
    * Get the Ajax page state from drupalSettings and prepare it for POSTing.
    *
    * @return array