Format all tests.

tests/language/vm/optimized_try_catch_cha_test.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 file.
 // VMOptions=--optimization_counter_threshold=100 --no-use-osr --no-background_compilation
 
 // Test CHA-based optimizations in presence of try-catch.
 
 import "package:expect/expect.dart";
 
 bar(i) {
   if (i == 11) throw 123;
 }
 
 class A {
   var f = 42;
-  
+
   foo(i) {
     do {
       try {
         bar(i);
       } catch (e, s) {
         Expect.equals(123, e);
       }
     } while (i < 0);
     return f;
   }
 }
 
-class B extends A {
-
-}
+class B extends A {}
 
 main() {
   var result;
   for (var i = 0; i < 200; i++) {
     try {
       result = new B().foo(i);
-    } catch (e) { }
+    } catch (e) {}
   }
   Expect.equals(42, result);
 }