Use Sync FakeServer in Android tests via custom APK

sync/sync_tests.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': [
     # Test support files for the 'sync_core' target.
     # GN version: //sync:test_support_sync_core
     {
       'target_name': 'test_support_sync_core',
@@ skipping 431 matching lines @@
           'type': 'none',
           'variables': {
             'package_name': 'sync_java_test_support',
             'java_in_dir': '../sync/test/android/javatests',
           },
           'dependencies': [
             'sync_java',
           ],
           'includes': [ '../build/java.gypi' ],
         },
+        {
+          'target_name': 'sync_fake_server_jni_headers',
+          'type': 'none',
+          'sources': [
+            '../sync/test/android/javatests/src/org/chromium/sync/test/util/FakeServerHelper.java',
+          ],
+          'variables': {
+            'jni_gen_package': 'sync/test/fake_server',
+            'jni_generator_ptr_type': 'long',
+          },
+          'includes': [ '../build/jni_generator.gypi' ],
+        },
+        {
+          'target_name': 'test_support_sync_fake_server_android',
+          'type': 'static_library',
+          'dependencies': [
+            'sync_fake_server_jni_headers',
+            'test_support_sync_fake_server',
+            '../base/base.gyp:base',
+          ],
+          'sources': [
+            'test/fake_server/android/fake_server_helper_android.cc',
+            'test/fake_server/android/fake_server_helper_android.h',
+          ],
+        },
       ],
     }],
     ['OS == "android"', {
       'targets': [
         {
           'target_name': 'sync_unit_tests_apk',
           'type': 'none',
           'dependencies': [
             'sync_unit_tests',
           ],
           'variables': {
             'test_suite_name': 'sync_unit_tests',
           },
           'includes': [ '../build/apk_test.gypi' ],
         },
       ],
     }],
   ],
 }