GN: Fix Android component build

chrome/chrome_common.gypi

 # Copyright (c) 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.
 
 {
   'variables': {
     # File lists shared with GN build.
     'chrome_common_sources': [
       'common/all_messages.h',
       'common/attrition_experiments.h',
@@ skipping 254 matching lines @@
       'common/media_galleries/picasa_types.h',
       'common/media_galleries/pmp_constants.h',
     ],
     'chrome_common_mac_sources': [
       'common/media_galleries/iphoto_library.cc',
       'common/media_galleries/iphoto_library.h',
     ]
   },
   'targets': [
     {
+      # GN: //chrome/common:common
       'target_name': 'common',
       'type': 'static_library',
       'variables': {
         'chrome_common_target': 1,
         'enable_wexit_time_destructors': 1,
       },
       'include_dirs': [
           '..',
           '<(SHARED_INTERMEDIATE_DIR)',  # Needed by chrome_content_client.cc.
         ],
@@ skipping 394 matching lines @@
         'common/safe_browsing/csd.proto'
       ],
       'variables': {
         'proto_in_dir': 'common/safe_browsing',
         'proto_out_dir': 'chrome/common/safe_browsing',
       },
       'includes': [ '../build/protoc.gypi' ],
     },
   ],
 }