MalformedType used for all invalid type annotations.

sdk/lib/_internal/compiler/implementation/elements/elements.dart

Index: sdk/lib/_internal/compiler/implementation/elements/elements.dart
diff --git a/sdk/lib/_internal/compiler/implementation/elements/elements.dart b/sdk/lib/_internal/compiler/implementation/elements/elements.dart
index 2289215786ace49702251ad5ab5e8b37bf11329d..b0dd1fb7503614ca1efd97fddaf22c296733c52c 100644
--- a/sdk/lib/_internal/compiler/implementation/elements/elements.dart
+++ b/sdk/lib/_internal/compiler/implementation/elements/elements.dart
@@ -202,8 +202,6 @@ class Element implements Spannable {
   /** See [AmbiguousElement] for documentation. */
   bool isAmbiguous() => false;
 
-  bool isMalformed() => false;
-
   /**
    * Is [:true:] if this element has a corresponding patch.
    *
@@ -1348,23 +1346,6 @@ class VoidElement extends Element {
   bool impliesType() => true;
 }
 
-class MalformedTypeElement extends Element {
-  final TypeAnnotation typeNode;
-
-  MalformedTypeElement(this.typeNode, Element enclosing)
-      : super(const SourceString('malformed'),
-              ElementKind.MALFORMED_TYPE,
-              enclosing);
-
-  DartType computeType(compiler) => compiler.types.malformedType;
-
-  Node parseNode(_) => typeNode;
-
-  bool impliesType() => true;
-
-  bool isMalformed() => true;
-}
-
 /**
  * [TypeDeclarationElement] defines the common interface for class/interface
  * declarations and typedefs.
@@ -1807,10 +1788,9 @@ abstract class ClassElement extends ScopeContainerElement
 
 class Elements {
   static bool isUnresolved(Element e) {
-    return e == null || e.isErroneous() || e.isMalformed();
+    return e == null || e.isErroneous();
   }
   static bool isErroneousElement(Element e) => e != null && e.isErroneous();
-  static bool isMalformedElement(Element e) => e != null && e.isMalformed();
 
   static bool isClass(Element e) => e != null && e.kind == ElementKind.CLASS;
   static bool isTypedef(Element e) {