Reduce usage of FOR_EACH_OBSERVER macro in components/

components/proximity_auth/cryptauth/cryptauth_enrollment_manager.cc

 // 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.
 
 #include "components/proximity_auth/cryptauth/cryptauth_enrollment_manager.h"
 
 #include <utility>
 
 #include "base/base64url.h"
 #include "base/memory/ptr_util.h"
@@ skipping 137 matching lines @@
     pref_service_->SetInteger(prefs::kCryptAuthEnrollmentReason,
                               cryptauth::INVOCATION_REASON_UNKNOWN);
   }
 
   pref_service_->SetBoolean(prefs::kCryptAuthEnrollmentIsRecoveringFromFailure,
                             !success);
 
   sync_request_->OnDidComplete(success);
   cryptauth_enroller_.reset();
   sync_request_.reset();
-  FOR_EACH_OBSERVER(Observer, observers_, OnEnrollmentFinished(success));
+  for (auto& observer : observers_)
+    observer.OnEnrollmentFinished(success);
 }
 
 std::unique_ptr<SyncScheduler>
 CryptAuthEnrollmentManager::CreateSyncScheduler() {
   return base::MakeUnique<SyncSchedulerImpl>(
       this, base::TimeDelta::FromDays(kEnrollmentRefreshPeriodDays),
       base::TimeDelta::FromMinutes(kEnrollmentBaseRecoveryPeriodMinutes),
       kEnrollmentMaxJitterRatio, "CryptAuth Enrollment");
 }
 
@@ skipping 54 matching lines @@
     OnEnrollmentFinished(false);
   }
 }
 
 void CryptAuthEnrollmentManager::OnReenrollMessage() {
   ForceEnrollmentNow(cryptauth::INVOCATION_REASON_SERVER_INITIATED);
 }
 
 void CryptAuthEnrollmentManager::OnSyncRequested(
     std::unique_ptr<SyncScheduler::SyncRequest> sync_request) {
-  FOR_EACH_OBSERVER(Observer, observers_, OnEnrollmentStarted());
+  for (auto& observer : observers_)
+    observer.OnEnrollmentStarted();
 
   sync_request_ = std::move(sync_request);
   if (gcm_manager_->GetRegistrationId().empty() ||
       pref_service_->GetInteger(prefs::kCryptAuthEnrollmentReason) ==
           cryptauth::INVOCATION_REASON_MANUAL) {
     gcm_manager_->RegisterWithGCM();
   } else {
     DoCryptAuthEnrollment();
   }
 }
@@ skipping 49 matching lines @@
                << device_info.gcm_registration_id();
 
   cryptauth_enroller_ = enroller_factory_->CreateInstance();
   cryptauth_enroller_->Enroll(
       GetUserPublicKey(), GetUserPrivateKey(), device_info, invocation_reason,
       base::Bind(&CryptAuthEnrollmentManager::OnEnrollmentFinished,
                  weak_ptr_factory_.GetWeakPtr()));
 }
 
 }  // namespace proximity_auth