Only cache the view_context_class in one place

This patch removes the instance writer of view_context_class.
Subclasses may override it, but it doesn't need to be written.  This
also eliminates the need to cache the return value of the class level
`view_context_class` method.

1 files changed, 1 insertions, 3 deletions

diff --git a/actionview/lib/action_view/rendering.rb b/actionview/lib/action_view/rendering.rb
index cb4327cf16..205665a8c6 100644
--- a/actionview/lib/action_view/rendering.rb
+++ b/actionview/lib/action_view/rendering.rb
@@ -55,10 +55,8 @@ module ActionView
       end
     end
 
-    attr_internal_writer :view_context_class
-
     def view_context_class
-      @_view_context_class ||= self.class.view_context_class
+      self.class.view_context_class
     end
 
     # An instance of a view class. The default view class is ActionView::Base.