Enable building with a small set of JNI related files required for linking content_unittests.

base/base.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.
 
 {
   'target_defaults': {
     'variables': {
       'base_target': 0,
     },
     'target_conditions': [
@@ skipping 457 matching lines @@
               'system_monitor/system_monitor_posix.cc',
             ],
             'sources/': [
               ['include', '^process_util_linux\\.cc$'],
               ['include', '^sys_info_linux\\.cc$'],
               ['include', '^sys_string_conversions_posix\\.cc$'],
               ['include', '^worker_pool_linux\\.cc$'],
               # TODO(michaelbai): The below files are excluded because of the
               # missing JNI, add them back when JNI is ready.
               ['exclude', '^android/'],
+              ['include', 'android/jni_android.cc'],
+              ['include', 'android/jni_android.h'],
+              ['include', 'android/scoped_java_ref.cc'],
+              ['include', 'android/scoped_java_ref.h'],
               ['exclude', '^base_paths_android\\.cc$'],
               ['exclude', '^message_pump_android\\.cc$'],
             ],
           }],
           [ 'OS != "mac"', {
               'sources!': [
                 'mac/scoped_aedesc.h'
               ],
           }],
           # For now, just test the *BSD platforms enough to exclude them.
@@ skipping 399 matching lines @@
             'third_party/xdg_mime/xdgmimemagic.c',
             'third_party/xdg_mime/xdgmimemagic.h',
             'third_party/xdg_mime/xdgmimeparent.c',
             'third_party/xdg_mime/xdgmimeparent.h',
           ],
         },
       ],
     }],
   ],
 }