ActionController::Base#process() now only takes an action name

rather than an action name and *args.  The *args were not being used in regular
applications outside tests.  This causes a backwards compatibility
issue, but reduces array allocations for most users.

actionpack/CHANGELOG.md

@@ -1,3 +1,7 @@
+*   ActionController::Base#process() now only takes an action name, rather
+    than an action name and *args.  The *args were not being used in regular
+    applications outside tests.
+
 *   Catch invalid UTF-8 querystring values and respond with BadRequest
 
     Check querystring params for invalid UTF-8 characters, and raise an

actionpack/lib/abstract_controller/base.rb

@@ -116,7 +116,7 @@ module AbstractController
     #
     # ==== Returns
     # * <tt>self</tt>
-    def process(action, *args)
+    def process(action)
       @_action_name = action.to_s
 
       unless action_name = _find_action_name(@_action_name)
@@ -125,7 +125,7 @@ module AbstractController
 
       @_response_body = nil
 
-      process_action(action_name, *args)
+      process_action(action_name)
     end
 
     # Delegates to the class' ::controller_path

actionpack/test/abstract/callbacks_test.rb

@@ -246,26 +246,6 @@ module AbstractController
       end
     end
 
-    class CallbacksWithArgs < ControllerWithCallbacks
-      set_callback :process_action, :before, :first
-
-      def first
-        @text = "Hello world"
-      end
-
-      def index(text)
-        self.response_body = @text + text
-      end
-    end
-
-    class TestCallbacksWithArgs < ActiveSupport::TestCase
-      test "callbacks still work when invoking process with multiple arguments" do
-        controller = CallbacksWithArgs.new
-        controller.process(:index, " Howdy!")
-        assert_equal "Hello world Howdy!", controller.response_body
-      end
-    end
-
     class AliasedCallbacks < ControllerWithCallbacks
       ActiveSupport::Deprecation.silence do
         before_filter :first