Compare variable initializers as functions, skip the return type.

pkg/analyzer/lib/src/summary/resynthesize.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 summary_resynthesizer;
 
 import 'dart:collection';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
@@ skipping 1746 matching lines @@
    * If the given [serializedInitializer] is not `null`, create the
    * corresponding [FunctionElementImpl] and set it for the [variable].
    */
   void buildVariableInitializer(
       VariableElementImpl variable, UnlinkedExecutable serializedInitializer) {
     if (serializedInitializer == null) {
       return null;
     }
     FunctionElementImpl initializerElement =
         buildLocalFunction(serializedInitializer);
+    // TODO(scheglov) The flag `hasImplicitReturnType` is `true` now because we

[Paul Berry, 2016/02/18 16:40:00]

FYI, I'm about to make a change to the element model that sets
hasImplicitReturnType to true for variable initializer executable elements. 
When I make that change, I'll remove these two statements.

+    // don't serialize the return type. But once we do, the next two statements
+    // can be removed.
+    assert(initializerElement.hasImplicitReturnType == true);
+    initializerElement.hasImplicitReturnType = false;
     initializerElement.synthetic = true;
     variable.initializer = initializerElement;
   }
 
   /**
    * Finish creating a [TypeParameterElement] by deserializing its bound.
    */
   void finishTypeParameter(UnlinkedTypeParam serializedTypeParameter,
       TypeParameterElementImpl typeParameterElement) {
     if (serializedTypeParameter.bound != null) {
@@ skipping 450 matching lines @@
                 }
               : () => this.element;
       // TODO(paulberry): Is it a bug that we have to pass `false` for
       // isInstantiated?
       return new DeferredFunctionTypeImpl(computer, null, typeArguments, false);
     } else {
       return null;
     }
   }
 }