Add type inference for invalid constructor initializers.

pkg/front_end/lib/src/fasta/kernel/body_builder.dart

Index: pkg/front_end/lib/src/fasta/kernel/body_builder.dart
diff --git a/pkg/front_end/lib/src/fasta/kernel/body_builder.dart b/pkg/front_end/lib/src/fasta/kernel/body_builder.dart
index 0785c5ca4c2a9c53145af84ade12fee47e7b2160..c821c293bb6f9d305b3024a263ceeecf8b629ec2 100644
--- a/pkg/front_end/lib/src/fasta/kernel/body_builder.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/body_builder.dart
@@ -3137,7 +3137,8 @@ class BodyBuilder extends ScopeListener<JumpTarget> implements BuilderHelper {
   Initializer buildInvalidInitializer(Expression expression,
       [int charOffset = -1]) {
     needsImplicitSuperInitializer = false;
-    return new LocalInitializer(new VariableDeclaration.forValue(expression))
+    return new KernelInvalidInitializer(
+        new VariableDeclaration.forValue(expression))
       ..fileOffset = charOffset;
   }