Hoist hasReflectedType and reflectedType from ClassMirror to TypeMirror.

runtime/lib/mirrors_impl.dart

Index: runtime/lib/mirrors_impl.dart
diff --git a/runtime/lib/mirrors_impl.dart b/runtime/lib/mirrors_impl.dart
index 4efc47c57145a3dd56acb27d972f6398c2efcac1..283a59756c20a22e1b2fb02662f0986f88e6c2de 100644
--- a/runtime/lib/mirrors_impl.dart
+++ b/runtime/lib/mirrors_impl.dart
@@ -1054,7 +1054,9 @@ class _LocalTypeVariableMirror extends _LocalDeclarationMirror
   }
 
   bool get hasReflectedType => false;
-  Type get reflectedType => throw new UnsupportedError();
+  Type get reflectedType {
+    throw new UnsupportedError('Type variables have no reflected type');
+  }
   Type get _reflectedType => _reflectee;
 
   List<TypeVariableMirror> get typeVariables => emptyList;
@@ -1131,6 +1133,15 @@ class _LocalTypedefMirror extends _LocalDeclarationMirror
     return _referent;
   }
 
+  bool get hasReflectedType => !_isGenericDeclaration;
+  Type get reflectedType {
+    if (!hasReflectedType) {
+      throw new UnsupportedError(
+          "Declarations of generics have no reflected type");
+    }
+    return _reflectedType;
+  }
+
   bool get isOriginalDeclaration => !_isGeneric || _isGenericDeclaration;
 
   TypedefMirror get originalDeclaration {
@@ -1538,6 +1549,12 @@ class _SpecialTypeMirror extends _LocalMirror
 
   List<InstanceMirror> get metadata => emptyList;
 
+  bool get hasReflectedType => simpleName == #dynamic;
+  Type get reflectedType {
+    if (simpleName == #dynamic) return dynamic;
+    throw new UnsupportedError("void has no reflected type");
+  }
+
   List<TypeVariableMirror> get typeVariables => emptyList;
   List<TypeMirror> get typeArguments => emptyList;