[PoC] Reformat all BUILD.gn and *.gni files with new gn.

build/config/mac/rules.gni

 # 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.
 
 mac_app_script = "//build/config/mac/mac_app.py"
 
 template("code_sign_mac") {
   assert(defined(invoker.entitlements_path),
          "The path to the entitlements .xcent file")
   assert(defined(invoker.identity), "The code signing identity")
@@ skipping 177 matching lines @@
   process_nibs_mac(copy_xib_target_name) {
     visibility = [ ":$group_gen_target_name" ]
     sources = invoker.xibs
     module = app_name
     output_dir = "$app_name.app/Contents/Resources"
   }
 
   group(copy_all_target_name) {
     visibility = [ ":$group_gen_target_name" ]
     deps = [
+      ":$copy_bin_target_name",
+      ":$copy_plist_gen_target_name",
+      ":$copy_xib_target_name",
       ":$struct_gen_target_name",
-      ":$copy_plist_gen_target_name",
-      ":$copy_bin_target_name",
-      ":$copy_xib_target_name",
     ]
   }
 
   # Top level group
 
   group(group_gen_target_name) {
     deps = [
       ":$copy_all_target_name",
     ]
   }
 }