diff -up chromium-68.0.3440.106/extensions/browser/api/networking_private/BUILD.gn.fixb chromium-68.0.3440.106/extensions/browser/api/networking_private/BUILD.gn

--- chromium-68.0.3440.106/extensions/browser/api/networking_private/BUILD.gn.fixb	2018-08-09 03:56:36.091622243 -0400

+++ chromium-68.0.3440.106/extensions/browser/api/networking_private/BUILD.gn	2018-08-09 03:57:03.047001659 -0400

@@ -61,7 +61,7 @@ source_set("networking_private") {

               ]

     deps += [ "//chromeos" ]

   } else {

-    not_needed(default_sources)

+    not_needed([ "default_sources" ])

     sources = [

       "networking_private_stubs.cc",

     ]