Improve parser error recovery.

dart/sdk/lib/_internal/compiler/implementation/scanner/parser.dart

Index: dart/sdk/lib/_internal/compiler/implementation/scanner/parser.dart
diff --git a/dart/sdk/lib/_internal/compiler/implementation/scanner/parser.dart b/dart/sdk/lib/_internal/compiler/implementation/scanner/parser.dart
index 34d0d653cf77319c2117a5bd84fbc13b152450e8..e6163a9fe8e287a38b1cc3c458312a6ecdb92c9b 100644
--- a/dart/sdk/lib/_internal/compiler/implementation/scanner/parser.dart
+++ b/dart/sdk/lib/_internal/compiler/implementation/scanner/parser.dart
@@ -825,13 +825,14 @@ class Parser {
       token = parseVariableInitializerOpt(token);
       ++fieldCount;
     }
-    expectSemicolon(token);
+    Token semicolon = token;
+    token = expectSemicolon(token);
     if (isTopLevel) {
-      listener.endTopLevelFields(fieldCount, start, token);
+      listener.endTopLevelFields(fieldCount, start, semicolon);
     } else {
-      listener.endFields(fieldCount, start, token);
+      listener.endFields(fieldCount, start, semicolon);
     }
-    return token.next;
+    return token;
   }
 
   Token parseTopLevelMethod(Token start,