Issue #2847334 by dawehner, Wim Leers, Jaesin, EclipseGc:...

Issue #2847334 by dawehner, Wim Leers, Jaesin, EclipseGc: ContextAwarePluginBase should implement CacheableDependencyInterface

core/lib/Drupal/Core/Plugin/ContextAwarePluginBase.php

@@ -17,7 +17,7 @@
 /**
  * Base class for plugins that are context aware.
  */
-abstract class ContextAwarePluginBase extends ComponentContextAwarePluginBase implements ContextAwarePluginInterface {
+abstract class ContextAwarePluginBase extends ComponentContextAwarePluginBase implements ContextAwarePluginInterface, CacheableDependencyInterface {
   use TypedDataTrait;
   use StringTranslationTrait;
   use DependencySerializationTrait;