Revert of Restrict use of two app-launching command line flags

apps/app_load_service.cc

Index: apps/app_load_service.cc
diff --git a/apps/app_load_service.cc b/apps/app_load_service.cc
index c89a3692bf4ef15e29492daa8dfb93af37162753..eb4b5c6b1c5e7231fe7bd59986da09a0b808b3c0 100644
--- a/apps/app_load_service.cc
+++ b/apps/app_load_service.cc
@@ -64,9 +64,8 @@
   ExtensionService* extension_service =
       ExtensionSystem::Get(profile_)->extension_service();
   std::string extension_id;
-  if (!extensions::UnpackedInstaller::Create(extension_service)
-           ->LoadFromCommandLine(base::FilePath(extension_path), &extension_id,
-                                 true /* only_allow_apps */)) {
+  if (!extensions::UnpackedInstaller::Create(extension_service)->
+          LoadFromCommandLine(base::FilePath(extension_path), &extension_id)) {
     return false;
   }
 
@@ -82,9 +81,8 @@
   ExtensionService* extension_service =
       ExtensionSystem::Get(profile_)->extension_service();
   std::string extension_id;
-  return extensions::UnpackedInstaller::Create(extension_service)
-      ->LoadFromCommandLine(base::FilePath(extension_path), &extension_id,
-                            true /* only_allow_apps */);
+  return extensions::UnpackedInstaller::Create(extension_service)->
+      LoadFromCommandLine(base::FilePath(extension_path), &extension_id);
 }
 
 // static