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

chrome/browser/sync/test/integration/sync_extension_helper.cc

Index: chrome/browser/sync/test/integration/sync_extension_helper.cc
diff --git a/chrome/browser/sync/test/integration/sync_extension_helper.cc b/chrome/browser/sync/test/integration/sync_extension_helper.cc
index 2a4196c5687e88bd5a0158493875794e1ad7ff29..0c5c09b8ea8a1e6d887f0ebc5bfdf6c8dd0e8d1c 100644
--- a/chrome/browser/sync/test/integration/sync_extension_helper.cc
+++ b/chrome/browser/sync/test/integration/sync_extension_helper.cc
@@ -87,9 +87,9 @@ std::vector<std::string> SyncExtensionHelper::GetInstalledExtensionNames(
   std::vector<std::string> names;
   ExtensionService* extension_service = profile->GetExtensionService();
 
-  scoped_ptr<const ExtensionSet> extensions(
+  scoped_ptr<const extensions::ExtensionSet> extensions(
       extension_service->GenerateInstalledExtensionsSet());
-  for (ExtensionSet::const_iterator it = extensions->begin();
+  for (extensions::ExtensionSet::const_iterator it = extensions->begin();
        it != extensions->end(); ++it) {
     names.push_back((*it)->name());
   }
@@ -188,9 +188,9 @@ SyncExtensionHelper::ExtensionStateMap
 
   ExtensionService* extension_service = profile->GetExtensionService();
 
-  scoped_ptr<const ExtensionSet> extensions(
+  scoped_ptr<const extensions::ExtensionSet> extensions(
       extension_service->GenerateInstalledExtensionsSet());
-  for (ExtensionSet::const_iterator it = extensions->begin();
+  for (extensions::ExtensionSet::const_iterator it = extensions->begin();
        it != extensions->end(); ++it) {
     const std::string& id = (*it)->id();
     extension_state_map[id].enabled_state =