Run formatter on a few frontend and kernel files that hadn't been formatted.

pkg/front_end/testcases/rasta/type_literals.dart

Index: pkg/front_end/testcases/rasta/type_literals.dart
diff --git a/pkg/front_end/testcases/rasta/type_literals.dart b/pkg/front_end/testcases/rasta/type_literals.dart
index b3302c7e0f72582fc42eebc5b19bc2bae5390e43..2d8fc2310945cb80caafa2a96fe583a4dfd091f9 100644
--- a/pkg/front_end/testcases/rasta/type_literals.dart
+++ b/pkg/front_end/testcases/rasta/type_literals.dart
@@ -89,14 +89,14 @@ class C<T> {
     Func += 42;
     use(Func += 42);
 
-    C-= 42;
-    use(C-= 42);
-    dynamic-= 42;
-    use(dynamic-= 42);
-    T-= 42;
-    use(T-= 42);
-    Func-= 42;
-    use(Func-= 42);
+    C -= 42;
+    use(C -= 42);
+    dynamic -= 42;
+    use(dynamic -= 42);
+    T -= 42;
+    use(T -= 42);
+    Func -= 42;
+    use(Func -= 42);
   }
 }