Make ninja work with XCTests for iOS.

test/ios/xctests/App/ViewController.m

-// Copyright (c) 2014 Google Inc. All rights reserved.
+// Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "ViewController.h"
 
 @interface ViewController ()
 
-
 @end
 
 @implementation ViewController
 
 - (void)viewDidLoad {
   [super viewDidLoad];
-  // Do any additional setup after loading the view, typically from a nib.
 }
 
 - (void)didReceiveMemoryWarning {
   [super didReceiveMemoryWarning];
-  // Dispose of any resources that can be recreated.
 }
 
 @end