harmonize rewrite-includes and gn-format checks

The CheckGeneratedFiles bot only required rewriting
.gn files, while the presubmit wants both .gn and .gni files.

It also appears that the #includes rewrite script runs on
both the presubmit and CheckGeneratedFiles bots.

These presubmits run on the CQ before landing right?
If so, no need for them in the CheckGeneratedFIles bot at all.

And of course, format .gni files.

Change-Id: Icd4526d62f85088862ad93566cc9ace11dc3e33f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/281505
Reviewed-by: Eric Boren <borenet@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
diff --git a/PRESUBMIT.py b/PRESUBMIT.py
index 6660744..071965e 100644
--- a/PRESUBMIT.py
+++ b/PRESUBMIT.py
@@ -278,6 +278,7 @@
   results.extend(_CheckCompileIsolate(input_api, output_api))
   results.extend(_CheckDEPSValid(input_api, output_api))
   results.extend(_CheckIncludesFormatted(input_api, output_api))
+  results.extend(_CheckGNFormatted(input_api, output_api))
   return results
 
 
@@ -288,8 +289,6 @@
   # Run on upload, not commit, since the presubmit bot apparently doesn't have
   # coverage or Go installed.
   results.extend(_InfraTests(input_api, output_api))
-
-  results.extend(_CheckGNFormatted(input_api, output_api))
   results.extend(_CheckReleaseNotesForPublicAPI(input_api, output_api))
   return results