Patches to support Dart VM patch files in dart2js.

pkg/compiler/lib/src/resolution/send_resolver.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 dart2js.semantics_visitor.resolver;
 
 import '../common.dart';
 import '../constants/expressions.dart';
 import '../dart_types.dart';
 import '../elements/elements.dart';
@@ skipping 41 matching lines @@
       default:
         break;
     }
     throw new SpannableAssertionFailure(
         node, "Unhandled constructor declaration kind: ${kind}");
   }
 }
 
 class RedirectingFactoryConstructorDeclStructure<R, A>
     extends DeclStructure<R, A> {
-  InterfaceType redirectionTargetType;
+  // TODO(ahe): Construct invalid something instead.
+  DartType redirectionTargetType;
   ConstructorElement redirectionTarget;
 
   RedirectingFactoryConstructorDeclStructure(ConstructorElement constructor,
       this.redirectionTargetType, this.redirectionTarget)
       : super(constructor);
 
   R dispatch(SemanticDeclarationVisitor<R, A> visitor, FunctionExpression node,
       A arg) {
     return visitor.visitRedirectingFactoryConstructorDeclaration(node, element,
         node.parameters, redirectionTargetType, redirectionTarget, arg);
@@ skipping 144 matching lines @@
       return new FunctionDeclStructure(kind, element);
     }
   }
 
   InitializersStructure computeInitializersStructure(FunctionExpression node) {
     List<InitializerStructure> initializers = <InitializerStructure>[];
     NodeList list = node.initializers;
     bool constructorInvocationSeen = false;
     if (list != null) {
       for (Node initializer in list) {
-        InitializerStructure structure =
-            computeInitializerStructure(initializer);
-        if (structure.isConstructorInvoke) {
-          constructorInvocationSeen = true;
+        if (elements[initializer] != null) {
+          // TODO(ahe): Create erroneous structure.
+          InitializerStructure structure =
+              computeInitializerStructure(initializer);
+          if (structure.isConstructorInvoke) {
+            constructorInvocationSeen = true;
+          }
+          initializers.add(structure);
         }
-        initializers.add(structure);
       }
     }
     if (!constructorInvocationSeen) {
       ConstructorElement currentConstructor = elements[node];
       ClassElement currentClass = currentConstructor.enclosingClass;
       InterfaceType supertype = currentClass.supertype;
       if (supertype != null) {
         ClassElement superclass = supertype.element;
         ConstructorElement superConstructor =
             superclass.lookupDefaultConstructor();
@@ skipping 86 matching lines @@
       return internalError(node, "Unexpected variable $element.");
     }
     if (element.isConst) {
       ConstantExpression constant = elements.getConstant(element.initializer);
       return new ConstantVariableStructure(kind, node, element, constant);
     } else {
       return new NonConstantVariableStructure(kind, node, element);
     }
   }
 }