Move c/c/e/extension_set to top-level extensions/

chrome/browser/background/background_application_list_model.cc

Index: chrome/browser/background/background_application_list_model.cc
diff --git a/chrome/browser/background/background_application_list_model.cc b/chrome/browser/background/background_application_list_model.cc
index 01579569654d1e1eb47f98f16f7ba1f18a859864..53d39b1f424f8c4ad72b8460fa291684d5696868 100644
--- a/chrome/browser/background/background_application_list_model.cc
+++ b/chrome/browser/background/background_application_list_model.cc
@@ -88,9 +88,9 @@ class BackgroundApplicationListModel::Application
 namespace {
 void GetServiceApplications(ExtensionService* service,
                             ExtensionList* applications_result) {
-  const ExtensionSet* extensions = service->extensions();
+  const extensions::ExtensionSet* extensions = service->extensions();
 
-  for (ExtensionSet::const_iterator cursor = extensions->begin();
+  for (extensions::ExtensionSet::const_iterator cursor = extensions->begin();
        cursor != extensions->end();
        ++cursor) {
     const Extension* extension = cursor->get();
@@ -103,7 +103,7 @@ void GetServiceApplications(ExtensionService* service,
   // Walk the list of terminated extensions also (just because an extension
   // crashed doesn't mean we should ignore it).
   extensions = service->terminated_extensions();
-  for (ExtensionSet::const_iterator cursor = extensions->begin();
+  for (extensions::ExtensionSet::const_iterator cursor = extensions->begin();
        cursor != extensions->end();
        ++cursor) {
     const Extension* extension = cursor->get();