Roll to pickup pool changes

packages/barback/lib/src/graph/phase.dart

Index: packages/barback/lib/src/graph/phase.dart
diff --git a/packages/barback/lib/src/graph/phase.dart b/packages/barback/lib/src/graph/phase.dart
index 629291a11d00c4754ca8da08030f9b9e027d548c..fd5ad614a3ec28194a2dc39aaf0872d986623ba0 100644
--- a/packages/barback/lib/src/graph/phase.dart
+++ b/packages/barback/lib/src/graph/phase.dart
@@ -92,14 +92,15 @@ class Phase {
     // Before any transformers are added, the phase should be dirty if and only
     // if any input is dirty.
     if (_classifiers.isEmpty && _groups.isEmpty && previous == null) {
-      return _inputs.any((input) => input.state.isDirty) ?
-          NodeStatus.RUNNING : NodeStatus.IDLE;
+      return _inputs.any((input) => input.state.isDirty)
+          ? NodeStatus.RUNNING
+          : NodeStatus.IDLE;
     }
 
-    var classifierStatus = NodeStatus.dirtiest(
-        _classifiers.values.map((classifier) => classifier.status));
-    var groupStatus = NodeStatus.dirtiest(
-        _groups.values.map((group) => group.status));
+    var classifierStatus = NodeStatus
+        .dirtiest(_classifiers.values.map((classifier) => classifier.status));
+    var groupStatus =
+        NodeStatus.dirtiest(_groups.values.map((group) => group.status));
     return (previous == null ? NodeStatus.IDLE : previous.status)
         .dirtier(classifierStatus)
         .dirtier(groupStatus);
@@ -134,14 +135,13 @@ class Phase {
   // TODO(nweiz): Rather than passing the cascade and the phase everywhere,
   // create an interface that just exposes [getInput]. Emit errors via
   // [AssetNode]s.
-  Phase(AssetCascade cascade, String location)
-      : this._(cascade, location, 0);
+  Phase(AssetCascade cascade, String location) : this._(cascade, location, 0);
 
   Phase._(this.cascade, this._location, this._index, [this.previous]) {
     if (previous != null) {
       _previousOnAssetSubscription = previous.onAsset.listen(addInput);
-      _previousStatusSubscription = previous.onStatusChange
-          .listen((_) => _streams.changeStatus(status));
+      _previousStatusSubscription =
+          previous.onStatusChange.listen((_) => _streams.changeStatus(status));
     }
 
     onStatusChange.listen((status) {
@@ -170,8 +170,8 @@ class Phase {
   void addInput(AssetNode node) {
     // Each group is one channel along which an asset may be forwarded, as is
     // each transformer.
-    var forwarder = new PhaseForwarder(
-        node, _classifiers.length, _groups.length);
+    var forwarder =
+        new PhaseForwarder(node, _classifiers.length, _groups.length);
     _forwarders[node.id] = forwarder;
     forwarder.onAsset.listen(_handleOutputWithoutForwarder);
     if (forwarder.output != null) {
@@ -203,7 +203,7 @@ class Phase {
   /// If [id] is for a generated or transformed asset, this will wait until it
   /// has been created and return it. This means that the returned asset will
   /// always be [AssetState.AVAILABLE].
-  /// 
+  ///
   /// If the output cannot be found, returns null.
   Future<AssetNode> getOutput(AssetId id) {
     return new Future.sync(() {
@@ -231,8 +231,8 @@ class Phase {
 
       // Otherwise, store a completer for the asset node. If it's generated in
       // the future, we'll complete this completer.
-      var completer = _pendingOutputRequests.putIfAbsent(id,
-          () => new Completer.sync());
+      var completer =
+          _pendingOutputRequests.putIfAbsent(id, () => new Completer.sync());
       return completer.future;
     });
   }
@@ -248,8 +248,8 @@ class Phase {
     }
 
     for (var transformer in newTransformers.difference(oldTransformers)) {
-      var classifier = new TransformerClassifier(
-          this, transformer, "$_location.$_index");
+      var classifier =
+          new TransformerClassifier(this, transformer, "$_location.$_index");
       _classifiers[transformer] = classifier;
       classifier.onAsset.listen(_handleOutput);
       _streams.onLogPool.add(classifier.onLog);
@@ -259,7 +259,7 @@ class Phase {
       }
     }
 
-    var newGroups = DelegatingSet.typed/*<TransformerGroup>*/(
+    var newGroups = DelegatingSet.typed<TransformerGroup>(
         transformers.where((op) => op is TransformerGroup).toSet());
     var oldGroups = _groups.keys.toSet();
     for (var removed in oldGroups.difference(newGroups)) {
@@ -354,8 +354,9 @@ class Phase {
       _outputs[asset.id].add(asset);
     } else {
       _outputs[asset.id] = new PhaseOutput(this, asset, "$_location.$_index");
-      _outputs[asset.id].onAsset.listen(_emit,
-          onDone: () => _outputs.remove(asset.id));
+      _outputs[asset.id]
+          .onAsset
+          .listen(_emit, onDone: () => _outputs.remove(asset.id));
       _emit(_outputs[asset.id].output);
     }
 
@@ -387,12 +388,14 @@ class Phase {
     // either available or removed before trying again to access it.
     assert(asset.state.isDirty);
     asset.force();
-    asset.whenStateChanges().then((state) {
-      if (state.isRemoved) return getOutput(asset.id);
-      return asset;
-    })
-       .then((asset) => request.complete(asset))
-       .catchError(request.completeError);
+    asset
+        .whenStateChanges()
+        .then((state) {
+          if (state.isRemoved) return getOutput(asset.id);
+          return asset;
+        })
+        .then((asset) => request.complete(asset))
+        .catchError(request.completeError);
   }
 
   String toString() => "phase $_location.$_index";