[analyzer] fix NodeReplacer for AwaitExpression

pkg/analyzer/test/generated/utilities_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.
 
 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine.utilities_test;
 
 import 'dart:collection';
@@ skipping 1925 matching lines @@
   @override
   Expression get(AssignmentExpression node) => node.rightHandSide;
 }
 
 class Getter_NodeReplacerTest_test_assignmentExpression_2
     implements NodeReplacerTest_Getter {
   @override
   Expression get(AssignmentExpression node) => node.leftHandSide;
 }
 
+class Getter_NodeReplacerTest_test_awaitExpression
+    implements NodeReplacerTest_Getter {
+  @override
+  Expression get(AwaitExpression node) => node.expression;
+}
+
 class Getter_NodeReplacerTest_test_binaryExpression
     implements NodeReplacerTest_Getter {
   @override
   Expression get(BinaryExpression node) => node.leftOperand;
 }
 
 class Getter_NodeReplacerTest_test_binaryExpression_2
     implements NodeReplacerTest_Getter {
   @override
   Expression get(BinaryExpression node) => node.rightOperand;
@@ skipping 1321 matching lines @@
 
   void test_assignmentExpression() {
     AssignmentExpression node = AstFactory.assignmentExpression(
         AstFactory.identifier3("l"), TokenType.EQ, AstFactory.identifier3("r"));
     _assertReplace(
         node, new Getter_NodeReplacerTest_test_assignmentExpression_2());
     _assertReplace(
         node, new Getter_NodeReplacerTest_test_assignmentExpression());
   }
 
+  void test_awaitExpression() {
+    var node = AstFactory.awaitExpression(AstFactory.identifier3("A"));
+    _assertReplace(node, new Getter_NodeReplacerTest_test_awaitExpression());
+  }
+
   void test_binaryExpression() {
     BinaryExpression node = AstFactory.binaryExpression(
         AstFactory.identifier3("l"), TokenType.PLUS,
         AstFactory.identifier3("r"));
     _assertReplace(node, new Getter_NodeReplacerTest_test_binaryExpression());
     _assertReplace(node, new Getter_NodeReplacerTest_test_binaryExpression_2());
   }
 
   void test_block() {
     Block node = AstFactory.block([AstFactory.emptyStatement()]);
@@ skipping 1279 matching lines @@
   }
 
   void test_get_added() {
     TokenMap tokenMap = new TokenMap();
     Token key = TokenFactory.tokenFromType(TokenType.AT);
     Token value = TokenFactory.tokenFromType(TokenType.AT);
     tokenMap.put(key, value);
     expect(tokenMap.get(key), same(value));
   }
 }