Run gn format on all BUILD.gn files (gn version 306668)

sky/engine/BUILD.gn

 # Copyright 2014 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.
 
 import("config.gni")
 if (is_clang) {
   import("//build/config/clang/clang.gni")
 }
 if (is_posix) {
   import("//build/config/gcc/gcc_version.gni")
 }
 
-visibility = ["//sky/*"]
+visibility = [ "//sky/*" ]
 
 # features ---------------------------------------------------------------------
 
 config("features") {
   defines = feature_defines_list
 }
 
 # inside_blink -----------------------------------------------------------------
 
 config("inside_blink") {
@@ skipping 49 matching lines @@
     cflags += [ "-Wglobal-constructors" ]
   }
 }
 
 group("engine") {
   deps = [
     "//sky/engine/web",
     "//sky/engine/platform",
   ]
 }