Sort GYP and GN files under ppapi

ppapi/tests/extensions/extensions.gyp

 # Copyright (c) 2013 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.
 
 {
   'includes': [
     '../../../ppapi/ppapi_nacl_test_common.gypi',
   ],
   'targets': [
     {
@@ skipping 19 matching lines @@
       'target_name': 'ppapi_tests_extensions_media_galleries',
       'type': 'none',
       'variables': {
         'nexe_target': 'ppapi_tests_extensions_media_galleries',
         # Only newlib build is used in tests, no need to build others.
         'build_newlib': 1,
         'build_glibc': 0,
         'build_pnacl_newlib': 0,
         'nexe_destination_dir': 'test_data/ppapi/tests/extensions/media_galleries',
         'sources': [
-          'media_galleries/test_galleries.cc',
           '<(DEPTH)/ppapi/tests/test_utils.cc',
           '<(DEPTH)/ppapi/tests/test_utils.h',
+          'media_galleries/test_galleries.cc',
         ],
         'test_files': [
           'media_galleries/background.js',
           'media_galleries/index.html',
           'media_galleries/manifest.json',
           'media_galleries/test.js',
         ],
       },
     },
     {
@@ skipping 39 matching lines @@
           },
         }],
       ],
       # Shim is a dependency for the nexe because we pre-translate.
       'dependencies': [
         '<(DEPTH)/ppapi/native_client/src/untrusted/pnacl_irt_shim/pnacl_irt_shim.gyp:aot',
       ],
     },
   ],
 }