Mark default apps on ChromeOS installed from DIR_EXTERNAL_EXTENSIONS "from webstore"

chrome/browser/extensions/external_extension_provider_impl.cc

Index: chrome/browser/extensions/external_extension_provider_impl.cc
diff --git a/chrome/browser/extensions/external_extension_provider_impl.cc b/chrome/browser/extensions/external_extension_provider_impl.cc
index d9f332ea7faadfd71c9dbaf35a418545c9472e65..934ccc38f74b2da0714e7a816c5ab9d9d85a6466 100644
--- a/chrome/browser/extensions/external_extension_provider_impl.cc
+++ b/chrome/browser/extensions/external_extension_provider_impl.cc
@@ -315,7 +315,11 @@ void ExternalExtensionProviderImpl::CreateExternalProviders(
                   check_admin_permissions_on_mac),
               Extension::EXTERNAL_PREF,
               Extension::EXTERNAL_PREF_DOWNLOAD,
+#if defined(OS_CHROMEOS)
+              Extension::FROM_WEBSTORE)));
+#else
               Extension::NO_FLAGS)));
+#endif
 
 #if defined(OS_CHROMEOS)
   // Define a per-user source of external default extensions, which serves