Let base_unittests build with the components build on android

base/android/path_utils.h

 // 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.
 
 #ifndef BASE_ANDROID_PATH_UTILS_H_
 #define BASE_ANDROID_PATH_UTILS_H_
 
 #include <jni.h>
 
 #include "base/base_export.h"
@@ skipping 15 matching lines @@
 // cache dir.
 BASE_EXPORT bool GetCacheDirectory(FilePath* result);
 
 // Retrieves the path to the public downloads directory. The result is placed
 // in the FilePath pointed to by 'result'.
 bool GetDownloadsDirectory(FilePath* result);
 
 // Retrieves the path to the native JNI libraries via
 // ApplicationInfo.nativeLibraryDir on the Java side. The result is placed in
 // the FilePath pointed to by 'result'.
-bool GetNativeLibraryDirectory(FilePath* result);
+BASE_EXPORT bool GetNativeLibraryDirectory(FilePath* result);
 
 // Retrieves the absolute path to the external storage directory. The result
 // is placed in the FilePath pointed to by 'result'.
 BASE_EXPORT bool GetExternalStorageDirectory(FilePath* result);
 
 bool RegisterPathUtils(JNIEnv* env);
 
 }  // namespace android
 }  // namespace base
 
 #endif  // BASE_ANDROID_PATH_UTILS_H_