Revise barback logging patch.

pkg/barback/lib/src/asset_cascade.dart

 // Copyright (c) 2013, 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 barback.asset_cascade;
 
 import 'dart:async';
 import 'dart:collection';
 
 import 'asset.dart';
 import 'asset_id.dart';
 import 'asset_node.dart';
 import 'asset_set.dart';
-import 'barback_logger.dart';
+import 'log.dart';
 import 'build_result.dart';
 import 'cancelable_future.dart';
 import 'errors.dart';
 import 'package_graph.dart';
 import 'phase.dart';
 import 'stream_pool.dart';
 import 'transformer.dart';
 import 'utils.dart';
 
 /// The asset cascade for an individual package.
@@ skipping 53 matching lines @@
   ///
   /// This may emit events when the cascade was already dirty. Events are
   /// emitted synchronously to ensure that the dirty state is thoroughly
   /// propagated as soon as any assets are changed.
   Stream get onDirty => _onDirtyPool.stream;
   final _onDirtyPool = new StreamPool.broadcast();
 
   /// A controller whose stream feeds into [_onDirtyPool].
   final _onDirtyController = new StreamController.broadcast(sync: true);
 
-  /// A stream that emits an event whenever any transforms in this cascade log
+  /// A stream that emits an event whenever any transforms in this cascade logs
   /// an entry.
   Stream<LogEntry> get onLog => _onLogPool.stream;
   final _onLogPool = new StreamPool<LogEntry>.broadcast();
 
   /// The errors that have occurred since the current build started.
   ///
   /// This will be empty if no build is occurring.
   Queue<BarbackException> _accumulatedErrors;
 
   /// The number of errors that have been logged since the current build
@@ skipping 202 matching lines @@
 
         // Otherwise, everything is done.
         return;
       }
 
       // Process that phase and then loop onto the next.
       return future.then((_) => _process());
     });
   }
 }