Revert 113071 - Revert 113047 - Make ExtensionService use ExtensionSet.

chrome/browser/ui/webui/options/search_engine_manager_handler.cc

Index: chrome/browser/ui/webui/options/search_engine_manager_handler.cc
===================================================================
--- chrome/browser/ui/webui/options/search_engine_manager_handler.cc	(revision 113231)
+++ chrome/browser/ui/webui/options/search_engine_manager_handler.cc	(working copy)
@@ -143,8 +143,8 @@
   ExtensionService* extension_service =
       Profile::FromWebUI(web_ui_)->GetExtensionService();
   if (extension_service) {
-    const ExtensionList* extensions = extension_service->extensions();
-    for (ExtensionList::const_iterator it = extensions->begin();
+    const ExtensionSet* extensions = extension_service->extensions();
+    for (ExtensionSet::const_iterator it = extensions->begin();
          it != extensions->end(); ++it) {
       if ((*it)->omnibox_keyword().size() > 0)
         keyword_list.Append(CreateDictionaryForExtension(*(*it)));