Run gn --format over all .gn files

chrome/app_shim/BUILD.gn

 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # This is the part of the shim process compiled into Chrome. It runs only
 # in the shim process, after the shim finds and loads the Chrome
 # Framework bundle.
 source_set("app_shim") {
   sources = [
     "chrome_main_app_mode_mac.mm",
   ]
 
   deps = [
+    "//chrome:strings",
     "//chrome/common:app_mode_app_support",
-    "//chrome:strings",
   ]
 }