Use ResolvedAst in constant initializers

pkg/compiler/lib/src/compile_time_constants.dart

Index: pkg/compiler/lib/src/compile_time_constants.dart
diff --git a/pkg/compiler/lib/src/compile_time_constants.dart b/pkg/compiler/lib/src/compile_time_constants.dart
index 724e6f669eca41b3b3742ed62d178f622b6ba15a..82cc6de475a33f0a2bab749c9271307236783804 100644
--- a/pkg/compiler/lib/src/compile_time_constants.dart
+++ b/pkg/compiler/lib/src/compile_time_constants.dart
@@ -1187,7 +1187,8 @@ class ConstructorEvaluator extends CompileTimeConstantEvaluator {
    * the [fieldValues] map.
    */
   void evaluateConstructorInitializers() {
-    if (constructor.isSynthesized) {
+    ResolvedAst resolvedAst = constructor.resolvedAst;
+    if (resolvedAst.kind != ResolvedAstKind.PARSED) {
       List<AstConstant> compiledArguments = <AstConstant>[];
 
       Function compileArgument = (element) => definitions[element];
@@ -1198,7 +1199,7 @@ class ConstructorEvaluator extends CompileTimeConstantEvaluator {
       evaluateSuperOrRedirectSend(compiledArguments, target);
       return;
     }
-    FunctionExpression functionNode = constructor.node;
+    FunctionExpression functionNode = resolvedAst.node;
     NodeList initializerList = functionNode.initializers;
 
     bool foundSuperOrRedirect = false;