clang-format all of //ash

ash/first_run/first_run_helper.cc

 // Copyright 2013 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.
 
 #include "ash/first_run/first_run_helper.h"
 
 namespace ash {
 
 FirstRunHelper::FirstRunHelper() {}
 FirstRunHelper::~FirstRunHelper() {}
 
 void FirstRunHelper::AddObserver(Observer* observer) {
   observers_.AddObserver(observer);
 }
 
 void FirstRunHelper::RemoveObserver(Observer* observer) {
   observers_.RemoveObserver(observer);
 }
 
 }  // namespace chromeos
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