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

chrome/browser/renderer_host/chrome_render_message_filter.cc

Index: chrome/browser/renderer_host/chrome_render_message_filter.cc
diff --git a/chrome/browser/renderer_host/chrome_render_message_filter.cc b/chrome/browser/renderer_host/chrome_render_message_filter.cc
index b31e75a650d70108503ef9e5937e3ecc1c21552d..6ce83ba69b230b19e0a43de266937bdc99acc260 100644
--- a/chrome/browser/renderer_host/chrome_render_message_filter.cc
+++ b/chrome/browser/renderer_host/chrome_render_message_filter.cc
@@ -18,7 +18,6 @@
 #include "chrome/browser/extensions/extension_message_service.h"
 #include "chrome/browser/extensions/extension_process_manager.h"
 #include "chrome/browser/extensions/extension_system.h"
-#include "chrome/browser/extensions/extension_system_factory.h"
 #include "chrome/browser/metrics/histogram_synchronizer.h"
 #include "chrome/browser/nacl_host/nacl_process_host.h"
 #include "chrome/browser/net/chrome_url_request_context.h"
@@ -56,7 +55,7 @@ ChromeRenderMessageFilter::ChromeRenderMessageFilter(
       profile_(profile),
       request_context_(request_context),
       extension_info_map_(
-          ExtensionSystemFactory::GetForProfile(profile)->info_map()),
+          ExtensionSystem::Get(profile)->info_map()),
       cookie_settings_(CookieSettings::Factory::GetForProfile(profile)),
       weak_ptr_factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)) {
 }
@@ -268,7 +267,7 @@ void ChromeRenderMessageFilter::OpenChannelToExtensionOnUIThread(
     const std::string& target_extension_id,
     const std::string& channel_name) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  ExtensionSystemFactory::GetForProfile(profile_)->message_service()->
+  ExtensionSystem::Get(profile_)->message_service()->
       OpenChannelToExtension(
           source_process_id, source_routing_id, receiver_port_id,
           source_extension_id, target_extension_id, channel_name);
@@ -294,7 +293,7 @@ void ChromeRenderMessageFilter::OpenChannelToTabOnUIThread(
     const std::string& extension_id,
     const std::string& channel_name) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  ExtensionSystemFactory::GetForProfile(profile_)->message_service()->
+  ExtensionSystem::Get(profile_)->message_service()->
       OpenChannelToTab(
           source_process_id, source_routing_id, receiver_port_id,
           tab_id, extension_id, channel_name);
@@ -387,7 +386,7 @@ void ChromeRenderMessageFilter::OnExtensionCloseChannel(int port_id,
     return;  // To guard against crash in browser_tests shutdown.
 
   ExtensionMessageService* message_service =
-      ExtensionSystemFactory::GetForProfile(profile_)->message_service();
+      ExtensionSystem::Get(profile_)->message_service();
   if (message_service)
     message_service->CloseChannel(port_id, connection_error);
 }