Roll Observatory deps (charted -> ^0.3.0)

packages/dart_style/lib/src/rule/type_argument.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library dart_style.src.rule.type_argument;
 
 import '../chunk.dart';
 import 'rule.dart';
 
 /// Rule for splitting a list of type arguments or type parameters. Type
@@ skipping 25 matching lines @@
   int get numValues => _arguments.length == 1 ? 2 : _arguments.length + 2;
 
   /// Remembers [chunk] as containing the split that occurs right before a type
   /// argument in the list.
   void beforeArgument(Chunk chunk) {
     _arguments.add(chunk);
   }
 
   bool isSplit(int value, Chunk chunk) {
     // Don't split at all.
-    if (value == 0) return false;
+    if (value == Rule.unsplit) return false;
 
     // Split before every argument.
     if (value == numValues - 1) return true;
 
     // Split before a single argument. Try later arguments before earlier ones
     // to try to keep as much on the first line as possible.
     return chunk == _arguments[_arguments.length - value];
   }
+
+  String toString() => "TypeArg${super.toString()}";
 }