partial fix for #25220, handles inference for list/map literals

pkg/analyzer/test/src/summary/summary_common.dart

 // Copyright (c) 2015, 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 analyzer.test.src.summary.summary_common;
 
 import 'package:analyzer/analyzer.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/src/dart/scanner/reader.dart';
@@ skipping 6896 matching lines @@
     expect(initializer.localVariables, isEmpty);
   }
 
   test_variable_initializer_noInitializer() {
     UnlinkedVariable variable = serializeVariableText('var v;');
     expect(variable.initializer, isNull);
   }
 
   test_variable_initializer_withLocals() {
     String text =
-        'var v = {"1": () { f1() {} var v1; }, "2": () { f2() {} var v2; }};';
+        'var v = <dynamic, dynamic>{"1": () { f1() {} var v1; }, '
+        '"2": () { f2() {} var v2; }};';
     UnlinkedVariable variable = serializeVariableText(text);
     UnlinkedExecutable initializer = variable.initializer;
     expect(initializer, isNotNull);
-    expect(initializer.nameOffset, text.indexOf('{"1'));
+    expect(initializer.nameOffset, text.indexOf('<dynamic, dynamic>{"1'));
     expect(initializer.name, isEmpty);
     expect(initializer.localFunctions, hasLength(2));
     // closure: () { f1() {} var v1; }
     {
       UnlinkedExecutable closure = initializer.localFunctions[0];
       expect(closure.nameOffset, text.indexOf('() { f1()'));
       expect(closure.name, isEmpty);
       // closure - f1
       expect(closure.localFunctions, hasLength(1));
       expect(closure.localFunctions[0].name, 'f1');
@@ skipping 223 matching lines @@
 class _PrefixExpectation {
   final ReferenceKind kind;
   final String name;
   final String absoluteUri;
   final String relativeUri;
   final int numTypeParameters;
 
   _PrefixExpectation(this.kind, this.name,
       {this.absoluteUri, this.relativeUri, this.numTypeParameters: 0});
 }