rac] Add re2 dependency to libaddressinput.

third_party/libaddressinput/chromium/cpp/re2.gyp

 # Copyright (C) 2013 Google Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
 # http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
 {
   'variables': {
-    'rapidjson_dir%': '<(DEPTH)/../externals/rapidjson/include',
+    're2_dir%': '/usr/include',
+    're2_lib%': '/usr/lib/libre2.a',
   },
   'targets': [
     {
-      'target_name': 'rapidjson',
+      'target_name': 're2',
       'type': 'none',
       'all_dependent_settings': {
         'include_dirs': [
-          '<(rapidjson_dir)',
+          '<(re2_dir)',
+        ],
+        'conditions': [
+          ['"<(component)" != "shared_library"', {
+            'libraries': [
+              '<(re2_lib)',
+            ],
+          }],
         ],
       },
     },
   ],
 }