Issue 21617. Replace explicit 'this' references and clean ups.

pkg/analysis_server/test/services/refactoring/inline_method_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.refactoring.inline_method;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/protocol.dart' hide Element;
 import 'package:analysis_server/src/services/refactoring/inline_method.dart';
@@ skipping 915 matching lines @@
     // validate change
     return _assertSuccessfulRefactoring(r'''
 class A {
   foo() {
     print(0);
   }
 }
 ''');
   }
 
+  test_method_this() {
+    // TODO
+    indexTestUnit(r'''
+class A {
+  accept(B b) {}
+}
+class B {
+  test(A a) {
+    print(this);
+    a.accept(this);
+  }
+}
+main() {
+  B b = new B();
+  A a = new A();
+  b.test(a);
+}
+''');
+    _createRefactoring('test(A a) {');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+class A {
+  accept(B b) {}
+}
+class B {
+}
+main() {
+  B b = new B();
+  A a = new A();
+  print(b);
+  a.accept(b);
+}
+''');
+  }
+
   test_method_unqualifiedUnvocation() {
     indexTestUnit(r'''
 class A {
   test(a, b) {
     print(a);
     print(b);
     return a + b;
   }
   foo() {
     var v = test(1, 2);
@@ skipping 438 matching lines @@
         });
       });
     });
   }
 
   void _createRefactoring(String search) {
     int offset = findOffset(search);
     refactoring = new InlineMethodRefactoring(searchEngine, testUnit, offset);
   }
 }