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

pkg/front_end/testcases/rasta/switch_fall_through.dart

 // Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE.md file.
 
 main() {
   switch (1) {
     case 1:
-    {
-      "No fall-through error needed.";
-      break;
-      ; // Empty statement.
-    }
+      {
+        "No fall-through error needed.";
+        break;
+        ; // Empty statement.
+      }
     case 2:
-    {
-      "Fall-through error needed.";
-      if (true) {
-        break;
+      {
+        "Fall-through error needed.";
+        if (true) {
+          break;
+        }
       }
-    }
     case 3:
       try {
         "No fall-through error needed.";
       } finally {
         break;
       }
     case 4:
       try {
         "No fall-through error needed.";
         break;
-      } finally {
-      }
+      } finally {}
     case 5:
       try {
         "Fall-through error needed.";
-      } finally {
-      }
+      } finally {}
     case 10000:
       "Should be last. No fall-through error, falling through allowed here.";
   }
 }