Convert the re2 GYP targets to be generated by GN.

chrome/chrome_browser_chromeos.gypi

 # 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': 'browser_chromeos',
       'type': 'static_library',
@@ skipping 64 matching lines @@
         '../third_party/icu/icu.gyp:icui18n',
         '../third_party/icu/icu.gyp:icuuc',
         '../third_party/leveldatabase/leveldatabase.gyp:leveldatabase',
         '../third_party/libevent/libevent.gyp:libevent',
         '../third_party/libjingle/libjingle.gyp:libjingle',
         '../third_party/libusb/libusb.gyp:libusb',
         '../third_party/libxml/libxml.gyp:libxml',
         '../third_party/npapi/npapi.gyp:npapi',
         '../third_party/protobuf/protobuf.gyp:protobuf_lite',
         '../third_party/protobuf/protobuf.gyp:protoc#host',
-        '../third_party/re2/re2.gyp:re2',
+        '../out/gn_gyp/third_party/re2/re2.gyp:re2',
         '../third_party/zlib/zlib.gyp:zlib',
         '../ui/base/strings/ui_strings.gyp:ui_strings',
         '../ui/resources/ui_resources.gyp:ui_resources',
         '../ui/surface/surface.gyp:surface',
         '../ui/ui.gyp:ui',
         '../ui/views/controls/webview/webview.gyp:webview',
         '../ui/views/controls/webview/webview.gyp:webview',
         '../ui/web_dialogs/web_dialogs.gyp:web_dialogs',
         '../url/url.gyp:url_lib',
         '../v8/tools/gyp/v8.gyp:v8',
@@ skipping 919 matching lines @@
         'browser/chromeos/attestation/attestation_signed_data.proto',
       ],
       'variables': {
         'proto_in_dir': 'browser/chromeos/attestation',
         'proto_out_dir': 'chrome/browser/chromeos/attestation',
       },
       'includes': [ '../build/protoc.gypi' ]
     },
   ],
 }