Bring type variables into static scope, but produce compile-time error when they are used.

lib/compiler/implementation/elements/elements.dart

Index: lib/compiler/implementation/elements/elements.dart
diff --git a/lib/compiler/implementation/elements/elements.dart b/lib/compiler/implementation/elements/elements.dart
index 71a7d0007dc859acdfd21e5800441658cf7d6755..aa3b9c43d110a76b2c72f58f3fa5bb1855721886 100644
--- a/lib/compiler/implementation/elements/elements.dart
+++ b/lib/compiler/implementation/elements/elements.dart
@@ -103,6 +103,8 @@ class ElementKind {
     const ElementKind('label', ElementCategory.NONE);
   static const ElementKind VOID =
     const ElementKind('void', ElementCategory.NONE);
+  static const ElementKind MALFORMED_TYPE =
+    const ElementKind('malformed', ElementCategory.NONE);
 
   toString() => id;
 }
@@ -332,6 +334,10 @@ class Element implements Spannable {
   FunctionElement asFunctionElement() => null;
 
   static bool isInvalid(Element e) => e == null || e.isErroneous();
+
+  bool inStaticContext() {
+    return modifiers.isStatic();
+  }
 }
 
 /**
@@ -1221,6 +1227,17 @@ class VoidElement extends Element {
   bool impliesType() => true;
 }
 
+class MalformedTypeElement extends Element {
+  final TypeAnnotation type;
+  MalformedTypeElement(this.type, Element enclosing)
+      : super(const SourceString('malformed'),
+              ElementKind.MALFORMED_TYPE,
+              enclosing);
+  DartType computeType(compiler) => compiler.types.malformedType;
+  Node parseNode(DiagnosticListener dl) => type;
+  bool impliesType() => true;
+}
+
 /**
  * [TypeDeclarationElement] defines the common interface for class/interface
  * declarations and typedefs.