Teach PRESUBMIT.py how to run gn check for most of the mojo repo

mojo/aura/BUILD.gn

Index: mojo/aura/BUILD.gn
diff --git a/mojo/aura/BUILD.gn b/mojo/aura/BUILD.gn
index 95d662fc010facafaeadb71b47714c705785f72c..2fde75975d87347376fcfa556c2a9227400174a6 100644
--- a/mojo/aura/BUILD.gn
+++ b/mojo/aura/BUILD.gn
@@ -22,12 +22,7 @@ source_set("aura") {
   ]
   deps = [
     "//cc",
-    "//skia",
-    "//ui/aura",
-    "//ui/compositor",
-    "//ui/events",
-    "//ui/events:events_base",
-    "//ui/gl",
+    "//cc/surfaces",
     "//mojo/cc",
     "//mojo/converters/geometry",
     "//mojo/converters/surfaces",
@@ -38,5 +33,11 @@ source_set("aura") {
     "//mojo/services/public/interfaces/gpu",
     "//mojo/services/public/interfaces/native_viewport",
     "//mojo/services/public/interfaces/surfaces",
+    "//skia",
+    "//ui/aura",
+    "//ui/compositor",
+    "//ui/events",
+    "//ui/events:events_base",
+    "//ui/gl",
   ]
 }