Add ExtensionSytem::Get(Profile*) as a wrapper around

chrome/browser/extensions/extension_event_router.cc

Index: chrome/browser/extensions/extension_event_router.cc
diff --git a/chrome/browser/extensions/extension_event_router.cc b/chrome/browser/extensions/extension_event_router.cc
index cfe5fec5eff363a9b22c0e945cef8e8a4d315d38..2aa72e97a19d62581ad69c8866df09d1bd40dbe8 100644
--- a/chrome/browser/extensions/extension_event_router.cc
+++ b/chrome/browser/extensions/extension_event_router.cc
@@ -16,7 +16,6 @@
 #include "chrome/browser/extensions/extension_processes_api_constants.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_system.h"
-#include "chrome/browser/extensions/extension_system_factory.h"
 #include "chrome/browser/extensions/extension_tabs_module.h"
 #include "chrome/browser/extensions/lazy_background_task_queue.h"
 #include "chrome/browser/extensions/process_map.h"
@@ -104,7 +103,7 @@ void ExtensionEventRouter::DispatchEvent(IPC::Message::Sender* ipc_sender,
 ExtensionEventRouter::ExtensionEventRouter(Profile* profile)
     : profile_(profile),
       extension_devtools_manager_(
-          ExtensionSystemFactory::GetForProfile(profile)->devtools_manager()) {
+          ExtensionSystem::Get(profile)->devtools_manager()) {
   registrar_.Add(this, content::NOTIFICATION_RENDERER_PROCESS_TERMINATED,
                  content::NotificationService::AllSources());
   registrar_.Add(this, content::NOTIFICATION_RENDERER_PROCESS_CLOSED,
@@ -396,8 +395,7 @@ void ExtensionEventRouter::MaybeLoadLazyBackgroundPage(
     return;
 
   LazyBackgroundTaskQueue* queue =
-      ExtensionSystemFactory::GetForProfile(profile)->
-          lazy_background_task_queue();
+      ExtensionSystem::Get(profile)->lazy_background_task_queue();
   if (queue->ShouldEnqueueTask(profile, extension)) {
     queue->AddPendingTask(
         profile, extension->id(),