Prepare for computation of NewStructure in Resolution.

pkg/compiler/lib/src/resolution/members.dart

Index: pkg/compiler/lib/src/resolution/members.dart
diff --git a/pkg/compiler/lib/src/resolution/members.dart b/pkg/compiler/lib/src/resolution/members.dart
index 5a80a1089dbce729924aae5d33567fac29808a3a..656c12c5c8a9822236da79a2d7b7968456d0b69d 100644
--- a/pkg/compiler/lib/src/resolution/members.dart
+++ b/pkg/compiler/lib/src/resolution/members.dart
@@ -50,7 +50,8 @@ import 'operators.dart';
 import 'send_structure.dart';
 
 import 'constructors.dart' show
-    ConstructorResolver;
+    ConstructorResolver,
+    ConstructorResult;
 import 'label_scope.dart' show
     StatementScope;
 import 'registry.dart' show
@@ -3637,7 +3638,7 @@ class ResolverVisitor extends MappingVisitor<ResolutionResult> {
     bool isConstConstructor = constructor.isConst;
     bool isValidAsConstant = isConstConstructor;
     ConstructorElement redirectionTarget = resolveRedirectingFactory(
-        node, inConstContext: isConstConstructor);
+        node, inConstContext: isConstConstructor).element;
     constructor.immediateRedirectionTarget = redirectionTarget;
 
     Node constructorReference = node.constructorReference;
@@ -3815,7 +3816,7 @@ class ResolverVisitor extends MappingVisitor<ResolutionResult> {
 
   ResolutionResult visitNewExpression(NewExpression node) {
     bool isValidAsConstant = true;
-    FunctionElement constructor = resolveConstructor(node);
+    ConstructorElement constructor = resolveConstructor(node).element;
     final bool isSymbolConstructor = constructor == compiler.symbolConstructor;
     final bool isMirrorsUsedConstant =
         node.isConst && (constructor == compiler.mirrorsUsedConstructor);
@@ -3857,8 +3858,6 @@ class ResolverVisitor extends MappingVisitor<ResolutionResult> {
     // factory constructors.
     registry.registerInstantiatedType(type);
     if (constructor.isGenerativeConstructor && cls.isAbstract) {
-      warning(node, MessageKind.ABSTRACT_CLASS_INSTANTIATION);
-      registry.registerAbstractClassInstantiation();
       isValidAsConstant = false;
     }
 
@@ -3994,14 +3993,15 @@ class ResolverVisitor extends MappingVisitor<ResolutionResult> {
    * Note: this function may return an ErroneousFunctionElement instead of
    * [:null:], if there is no corresponding constructor, class or library.
    */
-  ConstructorElement resolveConstructor(NewExpression node) {
-    return node.accept(new ConstructorResolver(compiler, this));
+  ConstructorResult resolveConstructor(NewExpression node) {
+    return node.accept(new ConstructorResolver(
+        compiler, this, inConstContext: node.isConst));
   }
 
-  ConstructorElement resolveRedirectingFactory(RedirectingFactoryBody node,
+  ConstructorResult resolveRedirectingFactory(RedirectingFactoryBody node,
                                                {bool inConstContext: false}) {
-    return node.accept(new ConstructorResolver(compiler, this,
-                                               inConstContext: inConstContext));
+    return node.accept(new ConstructorResolver(
+        compiler, this, inConstContext: inConstContext));
   }
 
   DartType resolveTypeAnnotation(TypeAnnotation node,