Roll Observatory deps (charted -> ^0.3.0)

packages/smoke/lib/static.dart

 // Copyright (c) 2014, 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.
 
 /// Static implementation of smoke services using code-generated data.
 library smoke.static;
 
 import 'dart:math' as math;
 
 import 'package:smoke/smoke.dart';
@@ skipping 127 matching lines @@
         var max = maxArgs(method);
         args = adjustList(args, min, max >= 0 ? max : args.length);
       }
     }
     if (namedArgs != null) {
       throw new UnsupportedError(
           'smoke.static doesn\'t support namedArguments in invoke');
     }
     try {
       return Function.apply(method, args);
-    } on NoSuchMethodError catch (e) {
+    } on NoSuchMethodError catch (_) {
       // TODO(sigmund): consider whether this should just be in a logger or if
       // we should wrap `e` as a new exception (what's the best way to let users
       // know about this tentativeError?)
       if (tentativeError != null) print(tentativeError);
       rethrow;
     }
   }
 }
 
 /// Implements [TypeInspectorService] using a static configuration.
@@ skipping 124 matching lines @@
 
 /// Exception thrown when trynig to access something that should be there, but
 /// the code generator didn't include it.
 class MissingCodeException implements Exception {
   final String description;
   MissingCodeException(this.description);
 
   String toString() => 'Missing $description. '
       'Code generation for the smoke package seems incomplete.';
 }