Issue #2020693 by heddn: Rename Views method post_render() to postRender().

core/modules/views/lib/Drupal/views/Plugin/views/cache/CachePluginBase.php

@@ -204,7 +204,7 @@ public function cacheFlush() {
    * All of the cached result data will be available in $view->result, as well,
    * so all ids used in the query should be discoverable.
    */
-  function post_render(&$output) { }
+  public function postRender(&$output) { }
 
   /**
    * Start caching the html head.

core/modules/views/lib/Drupal/views/Plugin/views/exposed_form/ExposedFormPluginBase.php

@@ -175,7 +175,7 @@ public function query() {
 
   function pre_render($values) { }
 
-  function post_render(&$output) { }
+  public function postRender(&$output) { }
 
   public function preExecute() { }
 

core/modules/views/lib/Drupal/views/ViewExecutable.php

@@ -1299,10 +1299,10 @@ public function render($display_id = NULL) {
       }
     }
 
-    $exposed_form->post_render($this->display_handler->output);
+    $exposed_form->postRender($this->display_handler->output);
 
     if ($cache) {
-      $cache->post_render($this->display_handler->output);
+      $cache->postRender($this->display_handler->output);
     }
 
     // Let modules modify the view output after it is rendered.