Reduce usage of FOR_EACH_OBSERVER macro in content/browser

content/browser/devtools/service_worker_devtools_manager.cc

Index: content/browser/devtools/service_worker_devtools_manager.cc
diff --git a/content/browser/devtools/service_worker_devtools_manager.cc b/content/browser/devtools/service_worker_devtools_manager.cc
index e7c76d8e9b6de06897c61211ae4f5dde7a495c5f..5febfff097b14bc3a18ba1e168d9d7e9c93daba5 100644
--- a/content/browser/devtools/service_worker_devtools_manager.cc
+++ b/content/browser/devtools/service_worker_devtools_manager.cc
@@ -89,7 +89,8 @@ bool ServiceWorkerDevToolsManager::WorkerCreated(
         new ServiceWorkerDevToolsAgentHost(id, service_worker_id,
                                            is_installed_version);
     workers_[id] = host.get();
-    FOR_EACH_OBSERVER(Observer, observer_list_, WorkerCreated(host.get()));
+    for (auto& observer : observer_list_)
+      observer.WorkerCreated(host.get());
     if (debug_service_worker_on_start_)
         host->PauseForDebugOnStart();
     return host->IsPausedForDebugOnStart();
@@ -114,8 +115,8 @@ void ServiceWorkerDevToolsManager::WorkerReadyForInspection(
     return;
   scoped_refptr<ServiceWorkerDevToolsAgentHost> host = it->second;
   host->WorkerReadyForInspection();
-  FOR_EACH_OBSERVER(Observer, observer_list_,
-                    WorkerReadyForInspection(host.get()));
+  for (auto& observer : observer_list_)
+    observer.WorkerReadyForInspection(host.get());
 
   // Then bring up UI for the ones not picked by other clients.
   if (host->IsPausedForDebugOnStart() && !host->IsAttached())
@@ -131,8 +132,8 @@ void ServiceWorkerDevToolsManager::WorkerVersionInstalled(int worker_process_id,
     return;
   scoped_refptr<ServiceWorkerDevToolsAgentHost> host = it->second;
   host->WorkerVersionInstalled();
-  FOR_EACH_OBSERVER(Observer, observer_list_,
-                    WorkerVersionInstalled(host.get()));
+  for (auto& observer : observer_list_)
+    observer.WorkerVersionInstalled(host.get());
 }
 
 void ServiceWorkerDevToolsManager::WorkerVersionDoomed(int worker_process_id,
@@ -144,7 +145,8 @@ void ServiceWorkerDevToolsManager::WorkerVersionDoomed(int worker_process_id,
     return;
   scoped_refptr<ServiceWorkerDevToolsAgentHost> host = it->second;
   host->WorkerVersionDoomed();
-  FOR_EACH_OBSERVER(Observer, observer_list_, WorkerVersionDoomed(host.get()));
+  for (auto& observer : observer_list_)
+    observer.WorkerVersionDoomed(host.get());
 }
 
 void ServiceWorkerDevToolsManager::WorkerDestroyed(int worker_process_id,
@@ -156,7 +158,8 @@ void ServiceWorkerDevToolsManager::WorkerDestroyed(int worker_process_id,
     return;
   scoped_refptr<WorkerDevToolsAgentHost> agent_host(it->second);
   agent_host->WorkerDestroyed();
-  FOR_EACH_OBSERVER(Observer, observer_list_, WorkerDestroyed(it->second));
+  for (auto& observer : observer_list_)
+    observer.WorkerDestroyed(it->second);
 }
 
 void ServiceWorkerDevToolsManager::RemoveInspectedWorkerData(WorkerId id) {