Disable completion of formal parameter names as *types*.

pkg/analysis_server/test/services/completion/completion_test_util.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library test.services.completion.util;
 
 import 'dart:async';
 
 import 'package:analysis_server/plugin/protocol/protocol.dart' as protocol
     show Element, ElementKind;
@@ skipping 3753 matching lines @@
     return computeFull((bool result) {
       assertSuggestInvocationMethod('nextBool', 'Random', 'bool');
       assertSuggestInvocationMethod('nextDouble', 'Random', 'double');
       assertSuggestInvocationMethod('nextInt', 'Random', 'int');
       assertNotSuggested('Random');
       assertNotSuggested('Object');
       assertNotSuggested('A');
     });
   }
 
+  test_parameterName_excludeTypes() {
+    addTestSource('m(int ^) {}');
+    return computeFull((bool result) {
+      assertNotSuggested('int');
+      assertNotSuggested('bool');
+    });
+  }
+
   test_partFile_TypeName() {
     // SimpleIdentifier  TypeName  ConstructorName
     addSource(
         '/testB.dart',
         '''
       lib B;
       int T1;
       F1() { }
       class X {X.c(); X._d(); z() {}}''');
     addSource(
@@ skipping 920 matching lines @@
       assertNotSuggested('bar2');
       assertNotSuggested('_B');
       assertSuggestLocalClass('Y');
       assertSuggestLocalClass('C');
       assertSuggestLocalVariable('f', null);
       assertNotSuggested('x');
       assertNotSuggested('e');
     });
   }
 }