Archive UpdaterSetup.exe

This is the updater's equivalent to mini_installer.

Bug: 995805
Change-Id: I6e126fc3dd0e56073a28299a6e9ef3c39fca8232
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1761636
Commit-Queue: Joshua Pawlicki <waffles@chromium.org>
Commit-Queue: Michael Moss <mmoss@chromium.org>
Auto-Submit: Joshua Pawlicki <waffles@chromium.org>
Reviewed-by: Michael Moss <mmoss@chromium.org>
Cr-Commit-Position: refs/heads/master@{#688570}

chrome/tools/build/win/FILES.cfg

@@ -718,6 +718,11 @@ FILES = [
     'buildtype': ['official'],
     'archive': 'updater.exe',
   },
+  {
+    'filename': 'UpdaterSetup.exe',
+    'buildtype': ['official'],
+    'archive': 'UpdaterSetup.exe',
+  },
   # Partner API files.
   {
     'filename': 'gcapi.h',