Support type literals as compile-time constants.

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

Index: sdk/lib/_internal/compiler/implementation/compile_time_constants.dart
diff --git a/sdk/lib/_internal/compiler/implementation/compile_time_constants.dart b/sdk/lib/_internal/compiler/implementation/compile_time_constants.dart
index 3505466746b2aef2374d67c6692c7cc33639bbcf..2b7b1ea3da48148309724be678033adb9eb9aa8f 100644
--- a/sdk/lib/_internal/compiler/implementation/compile_time_constants.dart
+++ b/sdk/lib/_internal/compiler/implementation/compile_time_constants.dart
@@ -416,6 +416,12 @@ class CompileTimeConstantEvaluator extends Visitor {
           result = compiler.compileVariable(element);
         }
         if (result != null) return result;
+      } else if (Elements.isClass(element) || Elements.isTypedef(element)) {
+        DartType type = element.computeType(compiler).asRaw();
+        Constant constant =
+            new TypeConstant(type, compiler.typeClass.computeType(compiler));
+        compiler.constantHandler.registerCompileTimeConstant(constant);
+        return constant;
       }
       return signalNotCompileTimeConstant(send);
     } else if (send.isCall) {