Add top level type inference logic for integer literals.

pkg/analyzer/lib/src/fasta/ast_builder.dart

 // Copyright (c) 2016, 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 fasta.analyzer.ast_builder;
 
 import 'package:analyzer/analyzer.dart';
 import 'package:analyzer/dart/ast/ast_factory.dart' show AstFactory;
 import 'package:analyzer/dart/ast/standard_ast_factory.dart' as standard;
 import 'package:analyzer/dart/ast/token.dart' as analyzer show Token;
@@ skipping 1589 matching lines @@
         ast.simpleIdentifier(returnType.token),
         period,
         name,
         parameters,
         toAnalyzerToken(separator),
         null,
         redirectedConstructor,
         body));
   }
 
-  void endFieldInitializer(Token assignment) {
+  void endFieldInitializer(Token assignment, Token token) {
     debugEvent("FieldInitializer");
     Expression initializer = pop();
     SimpleIdentifier name = pop();
     push(ast.variableDeclaration(
         name, toAnalyzerToken(assignment), initializer));
   }
 
   @override
   void endFunction(Token getOrSet, Token endToken) {
     debugEvent("Function");
@@ skipping 459 matching lines @@
       } else if (identical('static', s)) {
         staticKeyword = token;
       } else if (identical('var', s)) {
         finalConstOrVarKeyword = token;
       } else {
         internalError('Unhandled modifier: $s');
       }
     }
   }
 }