Moved ExtensionPrefs and related 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 e42089e74db0a7921c0b0e81d15f83702423459e..6af0b5aafd87729b4adc6a15a5e74308b84b3d22 100644
--- a/chrome/browser/autocomplete/extension_app_provider.cc
+++ b/chrome/browser/autocomplete/extension_app_provider.cc
@@ -58,7 +58,7 @@ void ExtensionAppProvider::LaunchAppFromOmnibox(
   // preference is set, launch as a regular tab.
   extension_misc::LaunchContainer launch_container =
       service->extension_prefs()->GetLaunchContainer(
-          extension, ExtensionPrefs::LAUNCH_REGULAR);
+          extension, extensions::ExtensionPrefs::LAUNCH_REGULAR);
 
   application_launch::OpenApplication(profile, extension, launch_container,
                                       GURL(), disposition, NULL);