Support typedef type literals

pkg/compiler/lib/src/kernel/element_map.dart

Index: pkg/compiler/lib/src/kernel/element_map.dart
diff --git a/pkg/compiler/lib/src/kernel/element_map.dart b/pkg/compiler/lib/src/kernel/element_map.dart
index 422db01c2cd1ff55a41ca78d8d9643f76ff2e29e..7d5561dde6f3e8214438a498c43e1e2bdb565632 100644
--- a/pkg/compiler/lib/src/kernel/element_map.dart
+++ b/pkg/compiler/lib/src/kernel/element_map.dart
@@ -64,6 +64,9 @@ abstract class KernelToElementMap {
   /// Returns the [ClassEntity] corresponding to the class [node].
   ClassEntity getClass(ir.Class node);
 
+  /// Returns the [TypedefType] corresponding to raw type of the typedef [node].
+  TypedefType getTypedefType(ir.Typedef node);
+
   /// Returns the super [MemberEntity] for a super invocation, get or set of
   /// [name] from the member [context].
   ///