Support serialization of the compiler backbone.

pkg/compiler/lib/src/resolution/constructors.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.
 
 part of resolution;
 
 class InitializerResolver {
   final ResolverVisitor visitor;
   final ConstructorElementX constructor;
   final FunctionExpression functionNode;
@@ skipping 203 matching lines @@
       String fullConstructorName = Elements.constructorNameForDiagnostics(
               className,
               constructorSelector.name);
       MessageKind kind = isImplicitSuperCall
           ? MessageKind.CANNOT_RESOLVE_CONSTRUCTOR_FOR_IMPLICIT
           : MessageKind.CANNOT_RESOLVE_CONSTRUCTOR;
       visitor.compiler.reportError(
           diagnosticNode, kind, {'constructorName': fullConstructorName});
       isValidAsConstant = false;
     } else {
-      lookedupConstructor.computeSignature(visitor.compiler);
+      lookedupConstructor.computeType(visitor.compiler);
       if (!call.signatureApplies(lookedupConstructor.functionSignature)) {
         MessageKind kind = isImplicitSuperCall
                            ? MessageKind.NO_MATCHING_CONSTRUCTOR_FOR_IMPLICIT
                            : MessageKind.NO_MATCHING_CONSTRUCTOR;
         visitor.compiler.reportError(diagnosticNode, kind);
         isValidAsConstant = false;
       } else if (constructor.isConst
                  && !lookedupConstructor.isConst) {
         MessageKind kind = isImplicitSuperCall
                            ? MessageKind.CONST_CALLS_NON_CONST_FOR_IMPLICIT
@@ skipping 337 matching lines @@
     return element;
   }
 
   /// Assumed to be called by [resolveRedirectingFactory].
   Element visitRedirectingFactoryBody(RedirectingFactoryBody node) {
     Node constructorReference = node.constructorReference;
     return finishConstructorReference(visit(constructorReference),
         constructorReference, node);
   }
 }