Run dartfmt on kernel package

pkg/kernel/testcases/input/redirecting_factory.dart

 abstract class FooBase<Tf> {
-        int get x;
-        factory FooBase(int x) = Foo<Tf>;
+  int get x;
+  factory FooBase(int x) = Foo<Tf>;
 }
 
 abstract class Foo<T> implements FooBase {
-        factory Foo(int x) = Bar<String,T>;
+  factory Foo(int x) = Bar<String, T>;
 }
 
-class Bar<Sb,Tb> implements Foo<Tb> {
-        int x;
-        Bar(this.x) {
-                print('Bar<$Sb,$Tb>');
-        }
+class Bar<Sb, Tb> implements Foo<Tb> {
+  int x;
+  Bar(this.x) {
+    print('Bar<$Sb,$Tb>');
+  }
 }
 
 class Builder<X> {
-        method() {
-                return new FooBase<X>(4);
-        }
+  method() {
+    return new FooBase<X>(4);
+  }
 }
 
-class SimpleCase<A,B> {
-        factory SimpleCase() = SimpleCaseImpl<A,B>;
+class SimpleCase<A, B> {
+  factory SimpleCase() = SimpleCaseImpl<A, B>;
 }
 
-class SimpleCaseImpl<Ai,Bi> implements SimpleCase<Ai,Bi> {
-        factory SimpleCaseImpl() = SimpleCaseImpl2<Ai,Bi>;
+class SimpleCaseImpl<Ai, Bi> implements SimpleCase<Ai, Bi> {
+  factory SimpleCaseImpl() = SimpleCaseImpl2<Ai, Bi>;
 }
 
-class SimpleCaseImpl2<Ai2,Bi2> implements SimpleCaseImpl<Ai2,Bi2> {
-}
+class SimpleCaseImpl2<Ai2, Bi2> implements SimpleCaseImpl<Ai2, Bi2> {}
 
-class Base<M> {
+class Base<M> {}
 
-}
-class Mixin<M> {
-
-}
+class Mixin<M> {}
 
 class Mix<M> = Base<M> with Mixin<M>;
 
 main() {
-        print(new FooBase<double>(4).x);
-        new SimpleCase<int,double>();
-        new Mix<double>();
+  print(new FooBase<double>(4).x);
+  new SimpleCase<int, double>();
+  new Mix<double>();
 }