Remove usage of FOR_EACH_OBSERVER macro in components/policy

components/policy/core/common/cloud/cloud_policy_core.cc

Index: components/policy/core/common/cloud/cloud_policy_core.cc
diff --git a/components/policy/core/common/cloud/cloud_policy_core.cc b/components/policy/core/common/cloud/cloud_policy_core.cc
index a1085740f08f46657d7ff65967155e28b79ab81a..d6f75037ad94910c823b480bbe6e6af2d3064a09 100644
--- a/components/policy/core/common/cloud/cloud_policy_core.cc
+++ b/components/policy/core/common/cloud/cloud_policy_core.cc
@@ -43,12 +43,14 @@ void CloudPolicyCore::Connect(std::unique_ptr<CloudPolicyClient> client) {
   client_ = std::move(client);
   service_.reset(new CloudPolicyService(policy_type_, settings_entity_id_,
                                         client_.get(), store_));
-  FOR_EACH_OBSERVER(Observer, observers_, OnCoreConnected(this));
+  for (auto& observer : observers_)
+    observer.OnCoreConnected(this);
 }
 
 void CloudPolicyCore::Disconnect() {
   if (client_)
-    FOR_EACH_OBSERVER(Observer, observers_, OnCoreDisconnecting(this));
+    for (auto& observer : observers_)
+      observer.OnCoreDisconnecting(this);
   refresh_delay_.reset();
   refresh_scheduler_.reset();
   remote_commands_service_.reset();
@@ -67,7 +69,8 @@ void CloudPolicyCore::StartRemoteCommandsService(
   // Do an initial remote commands fetch immediately.
   remote_commands_service_->FetchRemoteCommands();
 
-  FOR_EACH_OBSERVER(Observer, observers_, OnRemoteCommandsServiceStarted(this));
+  for (auto& observer : observers_)
+    observer.OnRemoteCommandsServiceStarted(this);
 }
 
 void CloudPolicyCore::RefreshSoon() {
@@ -80,7 +83,8 @@ void CloudPolicyCore::StartRefreshScheduler() {
     refresh_scheduler_.reset(
         new CloudPolicyRefreshScheduler(client_.get(), store_, task_runner_));
     UpdateRefreshDelayFromPref();
-    FOR_EACH_OBSERVER(Observer, observers_, OnRefreshSchedulerStarted(this));
+    for (auto& observer : observers_)
+      observer.OnRefreshSchedulerStarted(this);
   }
 }