Move ExtensionSystem into extensions namespace

chrome/browser/autocomplete/extension_app_provider.cc

Index: chrome/browser/autocomplete/extension_app_provider.cc
diff --git a/chrome/browser/autocomplete/extension_app_provider.cc b/chrome/browser/autocomplete/extension_app_provider.cc
index 6af0b5aafd87729b4adc6a15a5e74308b84b3d22..5c91c84295654e2c12bea73984b78ed0d2cca9c3 100644
--- a/chrome/browser/autocomplete/extension_app_provider.cc
+++ b/chrome/browser/autocomplete/extension_app_provider.cc
@@ -42,7 +42,8 @@ void ExtensionAppProvider::LaunchAppFromOmnibox(
     Profile* profile,
     WindowOpenDisposition disposition) {
   ExtensionService* service =
-      ExtensionSystemFactory::GetForProfile(profile)->extension_service();
+      extensions::ExtensionSystemFactory::GetForProfile(profile)->
+      extension_service();
   const extensions::Extension* extension =
       service->GetInstalledApp(match.destination_url);
   // While the Omnibox popup is open, the extension can be updated, changing
@@ -149,7 +150,8 @@ ExtensionAppProvider::~ExtensionAppProvider() {
 
 void ExtensionAppProvider::RefreshAppList() {
   ExtensionService* extension_service =
-      ExtensionSystemFactory::GetForProfile(profile_)->extension_service();
+      extensions::ExtensionSystemFactory::GetForProfile(profile_)->
+      extension_service();
   if (!extension_service)
     return;  // During testing, there is no extension service.
   const ExtensionSet* extensions = extension_service->extensions();