Revise barback logging patch.

pkg/barback/lib/src/transform_logger.dart

Index: pkg/barback/lib/src/transform_logger.dart
diff --git a/pkg/barback/lib/src/transform_logger.dart b/pkg/barback/lib/src/transform_logger.dart
index d046460888b0e93300b8ca786852f340c9d524ef..6067b36a172610ee2904b9a215c83d458de4c586 100644
--- a/pkg/barback/lib/src/transform_logger.dart
+++ b/pkg/barback/lib/src/transform_logger.dart
@@ -7,7 +7,7 @@ library barback.transform_logger;
 import 'package:source_maps/span.dart';
 
 import 'asset_id.dart';
-import 'barback_logger.dart';
+import 'log.dart';
 import 'transform.dart';
 
 /// Object used to report warnings and errors encountered while running a
@@ -19,8 +19,8 @@ class TransformLogger {
 
   /// Logs an informative message.
   ///
-  /// If [asset] is provided, the log entry is associated with that asset,
-  /// otherwise it's associated with the primary input of [transformer].
+  /// If [asset] is provided, the log entry is associated with that asset.
+  /// Otherwise it's associated with the primary input of [transformer].
   /// If [span] is provided, indicates the location in the input asset that
   /// caused the message.
   void info(String message, {AssetId asset, Span span}) {
@@ -29,8 +29,8 @@ class TransformLogger {
 
   /// Logs a warning message.
   ///
-  /// If [asset] is provided, the log entry is associated with that asset,
-  /// otherwise it's associated with the primary input of [transformer].
+  /// If [asset] is provided, the log entry is associated with that asset.
+  /// Otherwise it's associated with the primary input of [transformer].
   /// If present, [span] indicates the location in the input asset that caused
   /// the warning.
   void warning(String message, {AssetId asset, Span span}) {
@@ -39,8 +39,8 @@ class TransformLogger {
 
   /// Logs an error message.
   ///
-  /// If [asset] is provided, the log entry is associated with that asset,
-  /// otherwise it's associated with the primary input of [transformer].
+  /// If [asset] is provided, the log entry is associated with that asset.
+  /// Otherwise it's associated with the primary input of [transformer].
   /// If present, [span] indicates the location in the input asset that caused
   /// the error.
   // TODO(sigmund,nweiz): clarify when an error should be logged or thrown.