Revert of Convert the re2 GYP targets to be generated by GN.

components/url_matcher.gypi

 # Copyright 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.
 
 {
   'targets': [
     {
       'target_name': 'url_matcher',
       'type': '<(component)',
       'dependencies': [
         '../base/base.gyp:base',
         '../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
-        '../out/gn_gyp/third_party/re2/re2.gyp:re2',
+        '../third_party/re2/re2.gyp:re2',
         '../url/url.gyp:url_lib',
       ],
       'include_dirs': [
         '..',
       ],
       'defines': [
         'URL_MATCHER_IMPLEMENTATION',
       ],
       'sources': [
         'url_matcher/regex_set_matcher.cc',
@@ skipping 10 matching lines @@
         'url_matcher/url_matcher_factory.cc',
         'url_matcher/url_matcher_factory.h',
         'url_matcher/url_matcher_helpers.cc',
         'url_matcher/url_matcher_helpers.h',
       ],
       # Disable c4267 warnings until we fix size_t to int truncations.
       'msvs_disabled_warnings': [ 4267, ],
     },
   ],
 }