Run dartfmt on pkg/front_end/lib.

pkg/front_end/lib/src/fasta/builder/mixed_accessor.dart

Index: pkg/front_end/lib/src/fasta/builder/mixed_accessor.dart
diff --git a/pkg/front_end/lib/src/fasta/builder/mixed_accessor.dart b/pkg/front_end/lib/src/fasta/builder/mixed_accessor.dart
index 42297a6dd3d16cd35918a40e5d8bd86e460564b2..87ad32ee5d43069b23e5ae870fb9a786a83a17f1 100644
--- a/pkg/front_end/lib/src/fasta/builder/mixed_accessor.dart
+++ b/pkg/front_end/lib/src/fasta/builder/mixed_accessor.dart
@@ -4,9 +4,7 @@
 
 library fasta.mixed_accessor;
 
-import 'builder.dart' show
-    Builder,
-    LibraryBuilder;
+import 'builder.dart' show Builder, LibraryBuilder;
 
 /// Represents the import of a getter and setter from two different libraries.
 class MixedAccessor extends Builder {
@@ -14,8 +12,10 @@ class MixedAccessor extends Builder {
   final Builder setter;
 
   MixedAccessor(this.getter, this.setter, LibraryBuilder parent)
-      : super(parent, -1, // Synthetic element has no charOffset.
-          parent.fileUri) {
+      : super(
+            parent,
+            -1, // Synthetic element has no charOffset.
+            parent.fileUri) {
     next = getter;
   }
 }