Capture the selection and file content when the refactoring action wa…

…s triggered.

The selection and file content in beforeActionPerformed is incorrect for e.g.
inplace rename variable.

(cherry picked from commit 9c4052d)

ext/proto/logentry.proto

@@ -610,6 +610,7 @@ message Refactoring {
   }
 
   optional string refactoring_id = 1;
+  optional string action_class_name = 8;
   optional string workspace_id = 2;
   optional uint64 snapshot_before = 3;
   optional uint64 snapshot_after = 4;