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

build/config/mac/rules.gni

Index: build/config/mac/rules.gni
diff --git a/build/config/mac/rules.gni b/build/config/mac/rules.gni
index 8baad60597b9cfeb664ce58f7cc0a824b3c5409d..32f3d99914d43f1bb0a161a2943faa95813522a8 100644
--- a/build/config/mac/rules.gni
+++ b/build/config/mac/rules.gni
@@ -195,10 +195,10 @@ template("mac_app") {
   group(copy_all_target_name) {
     visibility = [ ":$group_gen_target_name" ]
     deps = [
-      ":$struct_gen_target_name",
-      ":$copy_plist_gen_target_name",
       ":$copy_bin_target_name",
+      ":$copy_plist_gen_target_name",
       ":$copy_xib_target_name",
+      ":$struct_gen_target_name",
     ]
   }