Run dartfmt on kernel package

pkg/kernel/lib/transformations/closure/context.dart

Index: pkg/kernel/lib/transformations/closure/context.dart
diff --git a/pkg/kernel/lib/transformations/closure/context.dart b/pkg/kernel/lib/transformations/closure/context.dart
index d2868b03a844d3211a42e2e7f1d33773980a4289..904ac560785ce95a3acfac424f2cb5aa8130259e 100644
--- a/pkg/kernel/lib/transformations/closure/context.dart
+++ b/pkg/kernel/lib/transformations/closure/context.dart
@@ -118,12 +118,11 @@ class LocalContext extends Context {
   factory LocalContext(ClosureConverter converter, Context parent) {
     Class contextClass = converter.contextClass;
     assert(contextClass.constructors.length == 1);
-    converter.rewriter.insertContextDeclaration(
-        contextClass, parent.expression);
+    converter.rewriter
+        .insertContextDeclaration(contextClass, parent.expression);
 
     return new LocalContext._internal(converter, parent,
-        converter.rewriter.contextDeclaration,
-        converter.rewriter.contextSize);
+        converter.rewriter.contextDeclaration, converter.rewriter.contextSize);
   }
 
   Expression get expression => accessor.buildSimpleRead();