A step towards handling `new Object()` in compile_from_dill_test

pkg/compiler/lib/src/elements/modelx.dart

Index: pkg/compiler/lib/src/elements/modelx.dart
diff --git a/pkg/compiler/lib/src/elements/modelx.dart b/pkg/compiler/lib/src/elements/modelx.dart
index bf12be6392c2b8aaab0b8f03fa20186f58f1e70d..b193876080eaceaeecf540740849ca3ea8284f98 100644
--- a/pkg/compiler/lib/src/elements/modelx.dart
+++ b/pkg/compiler/lib/src/elements/modelx.dart
@@ -2483,20 +2483,17 @@ class ConstructorBodyElementX extends BaseFunctionElementX
     if (node.hasEmptyBody) return null;
     ClassElement classElement = constructor.enclosingClass;
     ConstructorBodyElement bodyElement;
-    classElement.forEachBackendMember((Element backendMember) {
-      if (backendMember.isGenerativeConstructorBody) {
-        ConstructorBodyElement body = backendMember;
-        if (body.constructor == constructor) {
-          // TODO(kasperl): Find a way of stopping the iteration
-          // through the backend members.
-          bodyElement = backendMember;
-        }
+    classElement.forEachConstructorBody((ConstructorBodyElement body) {
+      if (body.constructor == constructor) {
+        // TODO(kasperl): Find a way of stopping the iteration
+        // through the backend members.
+        bodyElement = body;
       }
     });
     if (bodyElement == null) {
       bodyElement =
           new ConstructorBodyElementX(constructorResolvedAst, constructor);
-      classElement.addBackendMember(bodyElement);
+      classElement.addConstructorBody(bodyElement);
 
       if (constructor.isPatch) {
         // Create origin body element for patched constructors.
@@ -2504,7 +2501,7 @@ class ConstructorBodyElementX extends BaseFunctionElementX
         ConstructorBodyElementX origin = new ConstructorBodyElementX(
             constructorResolvedAst, constructor.origin);
         origin.applyPatch(patch);
-        classElement.origin.addBackendMember(bodyElement.origin);
+        classElement.origin.addConstructorBody(bodyElement.origin);
       }
     }
     assert(bodyElement.isGenerativeConstructorBody);