Removed XCallbackParameters and related code.

ios/chrome/app/chrome_app_startup_parameters_unittest.mm

 // 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 "ios/chrome/app/chrome_app_startup_parameters.h"
 
 #import <Foundation/Foundation.h>
 
 #include "base/strings/stringprintf.h"
 #include "ios/chrome/browser/app_startup_parameters.h"
 #include "ios/chrome/browser/chrome_url_constants.h"
-#import "ios/chrome/browser/xcallback_parameters.h"
 #include "ios/chrome/common/app_group/app_group_constants.h"
 #include "testing/gtest_mac.h"
 #include "testing/platform_test.h"
 #include "url/gurl.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
 namespace {
@@ skipping 209 matching lines @@
   // Key is a substring of some other string.
   CheckLaunchSourceForURL(
       first_run::LAUNCH_BY_MOBILESAFARI,
       @"http://www.google.com/search?query=pony&safarisabcdefg=1");
   CheckLaunchSourceForURL(
       first_run::LAUNCH_BY_MOBILESAFARI,
       @"http://www.google.com/search?query=pony&notsafarisab=1&abc=def");
 }
 
 }  // namespace