Add fix for missing @required params.

pkg/analysis_server/lib/src/services/correction/fix.dart

Index: pkg/analysis_server/lib/src/services/correction/fix.dart
diff --git a/pkg/analysis_server/lib/src/services/correction/fix.dart b/pkg/analysis_server/lib/src/services/correction/fix.dart
index 124621ec5d24cf1190b01e513952164507d4ba75..3cac4de6bd68202f2ba3cb0c9b154e4986854f01 100644
--- a/pkg/analysis_server/lib/src/services/correction/fix.dart
+++ b/pkg/analysis_server/lib/src/services/correction/fix.dart
@@ -123,6 +123,8 @@ class DartFixKind {
       "Add optional positional parameter");
   static const ADD_MISSING_PARAMETER_REQUIRED = const FixKind(
       'ADD_MISSING_PARAMETER_REQUIRED', 30, "Add required parameter");
+  static const ADD_MISSING_REQUIRED_PARAMETER = const FixKind(
+      'ADD_MISSING_REQUIRED_PARAMETER', 30, "Add required parameter");

[scheglov, 2017/02/14 22:06:07]

We're not adding parameters, we're adding arguments for required parameters.
"Add required arguments" might be better.

[pquitslund, 2017/02/14 23:41:37]

Done.

   static const ADD_NE_NULL = const FixKind('ADD_NE_NULL', 50, "Add != null");
   static const ADD_PACKAGE_DEPENDENCY = const FixKind(
       'ADD_PACKAGE_DEPENDENCY', 50, "Add dependency on package '{0}'");