Store toString value in enum.

pkg/compiler/lib/src/parser/element_listener.dart

Index: pkg/compiler/lib/src/parser/element_listener.dart
diff --git a/pkg/compiler/lib/src/parser/element_listener.dart b/pkg/compiler/lib/src/parser/element_listener.dart
index c635dd9514020747aeaf6d4a3db1905df8cfe329..de5445fa8e403aaa3c32b324498b388e56e42172 100644
--- a/pkg/compiler/lib/src/parser/element_listener.dart
+++ b/pkg/compiler/lib/src/parser/element_listener.dart
@@ -265,8 +265,12 @@ class ElementListener extends Listener {
   }
 
   @override
-  void endClassDeclaration(int interfacesCount, Token beginToken,
-      Token classKeyword, Token extendsKeyword, Token implementsKeyword,
+  void endClassDeclaration(
+      int interfacesCount,
+      Token beginToken,
+      Token classKeyword,
+      Token extendsKeyword,
+      Token implementsKeyword,

[sra1, 2017/02/24 01:01:50]

reformatting

       Token endToken) {
     makeNodeList(interfacesCount, implementsKeyword, null, ","); // interfaces
     popNode(); // superType
@@ -307,9 +311,8 @@ class ElementListener extends Listener {
   }
 
   @override
-  void endNamedMixinApplication(
-      Token beginToken, Token classKeyword, Token equals,
-      Token implementsKeyword, Token endToken) {
+  void endNamedMixinApplication(Token beginToken, Token classKeyword,
+      Token equals, Token implementsKeyword, Token endToken) {
     NodeList interfaces = (implementsKeyword != null) ? popNode() : null;
     MixinApplication mixinApplication = popNode();
     NodeList typeParameters = popNode();