Run gn --format over all .gn files

components/crash/core/common/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.
 
 source_set("common") {
   sources = [
     "crash_keys.cc",
     "crash_keys.h",
   ]
 
   deps = [
     "//base",
   ]
 
   if (is_mac || is_ios) {
     sources += [
       "objc_zombie.h",
       "objc_zombie.mm",
     ]
   }
 }
 
 source_set("unit_tests") {
   testonly = true
   if (is_mac || is_ios) {
     sources = [
       "objc_zombie_unittest.mm",
     ]
     deps = [
+      ":common",
       "//base",
       "//testing/gtest",
-      ":common",
     ]
   }
 }