Issue #2002396 by brennanmh, nathangervais: Rename Views method cache_expire() to cacheExpire().

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

@@ -94,7 +94,7 @@ public function summaryTitle() {
    * @param $type
    *   The cache type, either 'query', 'result' or 'output'.
    */
-  function cache_expire($type) { }
+  protected function cacheExpire($type) { }
 
    /**
     * Determine expiration time in the cache table of the cache type
@@ -143,7 +143,7 @@ public function cacheSet($type) {
    * A plugin should override this to provide specialized caching behavior.
    */
   function cache_get($type) {
-    $cutoff = $this->cache_expire($type);
+    $cutoff = $this->cacheExpire($type);
     switch ($type) {
       case 'query':
         // Not supported currently, but this is certainly where we'd put it.

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

@@ -107,7 +107,7 @@ protected function getLifespan($type) {
     return $lifespan;
   }
 
-  function cache_expire($type) {
+  protected function cacheExpire($type) {
     $lifespan = $this->getLifespan($type);
     if ($lifespan) {
       $cutoff = REQUEST_TIME - $lifespan;