suggest this keyword in constructor param list

pkg/analysis_server/test/services/completion/keyword_contributor_test.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.dart.keyword;
 
 import 'package:analysis_server/src/protocol.dart';
 import 'package:analysis_server/src/services/completion/dart_completion_manager.dart';
 import 'package:analysis_server/src/services/completion/keyword_contributor.dart';
 import 'package:analyzer/src/generated/scanner.dart';
@@ skipping 319 matching lines @@
     expect(computeFast(), isTrue);
     assertSuggestKeywords([Keyword.IMPLEMENTS], DART_RELEVANCE_HIGH);
   }
 
   test_class_with_name() {
     addTestSource('class A extends foo with ^');
     expect(computeFast(), isTrue);
     assertSuggestKeywords([]);
   }
 
+  test_constructor_param() {
+    addTestSource('class A { A(^) {});}');
+    expect(computeFast(), isTrue);
+    assertSuggestKeywords([Keyword.THIS]);
+  }
+
+  test_constructor_param2() {
+    addTestSource('class A { A(t^) {});}');
+    expect(computeFast(), isTrue);
+    assertSuggestKeywords([Keyword.THIS]);
+  }
+
   test_empty() {
     addTestSource('^');
     expect(computeFast(), isTrue);
     assertSuggestKeywords(
         DIRECTIVE_DECLARATION_AND_LIBRARY_KEYWORDS, DART_RELEVANCE_HIGH);
   }
 
   test_function_body_inClass_constructorInitializer() {
     addTestSource(r'''
 foo(p) {}
@@ skipping 204 matching lines @@
     expect(computeFast(), isTrue);
     assertSuggestKeywords([]);
   }
 
   test_method_body() {
     addTestSource('class A { foo() {^}}');
     expect(computeFast(), isTrue);
     assertSuggestKeywords(STMT_START_IN_CLASS);
   }
 
+  test_method_param() {
+    addTestSource('class A { foo(^) {});}');
+    expect(computeFast(), isTrue);
+    assertNoSuggestions();
+  }
+
+  test_method_param2() {
+    addTestSource('class A { foo(t^) {});}');
+    expect(computeFast(), isTrue);
+    assertNoSuggestions();
+  }
+
   test_named_constructor_invocation() {
     addTestSource('void main() {new Future.^}');
     expect(computeFast(), isTrue);
     assertSuggestKeywords([]);
   }
 
   test_part_of() {
     addTestSource('part of foo;^');
     expect(computeFast(), isTrue);
     assertSuggestKeywords(
@@ skipping 20 matching lines @@
     sorted.forEach((k) => msg.writeln('  Keyword.${k.name},'));
   }
 
   bool _equalSets(Iterable<Keyword> iter1, Iterable<Keyword> iter2) {
     if (iter1.length != iter2.length) return false;
     if (iter1.any((k) => !iter2.contains(k))) return false;
     if (iter2.any((k) => !iter1.contains(k))) return false;
     return true;
   }
 }