Use a test specific macro to call JNI registrars during APK tests.

net/net.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
 
     'linux_link_kerberos%': 0,
     'conditions': [
@@ skipping 1352 matching lines @@
               '../third_party/openssl/openssl.gyp:openssl',
             ],
             'sources!': [
               'dns/dns_config_service_posix_unittest.cc',
             ],
           },
         ],
         ['OS == "android" and gtest_target_type == "shared_library"', {
           'dependencies': [
             '../testing/android/native_test.gyp:native_test_native_code',
-          ]
+          ],
+          'defines': [
+            'REGISTER_NET_UNITESTS_JNI',
+          ],
         }],
         [ 'OS != "win" and OS != "mac"', {
           'sources!': [
             'base/x509_cert_types_unittest.cc',
           ],
         }]
       ],
     },
     {
       'target_name': 'net_unittests_run',
@@ skipping 548 matching lines @@
             'tools/dump_cache/url_to_filename_encoder.cc',
             'tools/dump_cache/url_to_filename_encoder.h',
             'tools/dump_cache/url_utilities.h',
             'tools/dump_cache/url_utilities.cc',
           ],
         },
       ],
     }],
   ],
 }