Convert the re2 GYP targets to be generated by GN.

third_party/re2/re2.gyp

Index: third_party/re2/re2.gyp
diff --git a/third_party/re2/re2.gyp b/third_party/re2/re2.gyp
deleted file mode 100644
index 99906ef4f9aaa7b8f4c9d0ecb4dc625c6b48fa62..0000000000000000000000000000000000000000
--- a/third_party/re2/re2.gyp
+++ /dev/null
@@ -1,84 +0,0 @@
-# Copyright (c) 2012 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.
-
-{
-  'targets': [
-    {
-      'target_name': 're2',
-      'type': 'static_library',
-      'include_dirs': [
-        '.',
-        '<(DEPTH)',
-      ],
-      'direct_dependent_settings': {
-        'include_dirs': [
-          '.',
-          '<(DEPTH)',
-        ],
-      },
-      'dependencies': [
-        '<(DEPTH)/base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
-      ],
-      'sources': [
-        're2/bitstate.cc',
-        're2/compile.cc',
-        're2/dfa.cc',
-        're2/filtered_re2.cc',
-        're2/filtered_re2.h',
-        're2/mimics_pcre.cc',
-        're2/nfa.cc',
-        're2/onepass.cc',
-        're2/parse.cc',
-        're2/perl_groups.cc',
-        're2/prefilter.cc',
-        're2/prefilter.h',
-        're2/prefilter_tree.cc',
-        're2/prefilter_tree.h',
-        're2/prog.cc',
-        're2/prog.h',
-        're2/re2.cc',
-        're2/re2.h',
-        're2/regexp.cc',
-        're2/regexp.h',
-        're2/set.cc',
-        're2/set.h',
-        're2/simplify.cc',
-        're2/stringpiece.h',
-        're2/tostring.cc',
-        're2/unicode_casefold.cc',
-        're2/unicode_casefold.h',
-        're2/unicode_groups.cc',
-        're2/unicode_groups.h',
-        're2/variadic_function.h',
-        're2/walker-inl.h',
-        'util/arena.cc',
-        'util/arena.h',
-        'util/atomicops.h',
-        'util/flags.h',
-        'util/hash.cc',
-        'util/logging.h',
-        'util/mutex.h',
-        'util/rune.cc',
-        'util/sparse_array.h',
-        'util/sparse_set.h',
-        'util/stringpiece.cc',
-        'util/stringprintf.cc',
-        'util/strutil.cc',
-        'util/utf.h',
-        'util/util.h',
-      ],
-      'conditions': [
-        ['OS=="win"', {
-          'sources': [
-            'mswin/stdint.h'
-          ],
-          'include_dirs': [
-            'mswin'
-          ],
-          'msvs_disabled_warnings': [ 4018, 4722, 4267 ],
-        }]
-      ]
-    },
-  ],
-}