Revert of 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
new file mode 100644
index 0000000000000000000000000000000000000000..99906ef4f9aaa7b8f4c9d0ecb4dc625c6b48fa62
--- /dev/null
+++ b/third_party/re2/re2.gyp
@@ -0,0 +1,84 @@
+# 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 ],
+        }]
+      ]
+    },
+  ],
+}