Let net_unittests build with the components build on android

net/android/network_change_notifier_delegate_android.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 NET_ANDROID_NETWORK_CHANGE_NOTIFIER_DELEGATE_ANDROID_H_
 #define NET_ANDROID_NETWORK_CHANGE_NOTIFIER_DELEGATE_ANDROID_H_
 
 #include "base/android/jni_android.h"
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/observer_list_threadsafe.h"
 #include "base/threading/thread_checker.h"
 #include "net/base/network_change_notifier.h"
 
 namespace net {
 
 // Delegate used to thread-safely notify NetworkChangeNotifierAndroid whenever a
 // network connection change notification is signaled by the Java side (on the
 // JNI thread).
 // All the methods exposed below must be called exclusively on the JNI thread
 // unless otherwise stated (e.g. AddObserver()/RemoveObserver()).
-class NetworkChangeNotifierDelegateAndroid {
+class NET_EXPORT_PRIVATE NetworkChangeNotifierDelegateAndroid {
  public:
   enum ConnectivityState {
     OFFLINE,
     ONLINE,
   };
 
   // Observer interface implemented by NetworkChangeNotifierAndroid which
   // subscribes to network change notifications fired by the delegate (and
   // initiated by the Java side).
   class Observer {
@@ skipping 38 matching lines @@
   scoped_refptr<base::SingleThreadTaskRunner> jni_task_runner_;
   base::android::ScopedJavaGlobalRef<jobject> java_network_change_notifier_;
   ConnectionType connection_type_;
 
   DISALLOW_COPY_AND_ASSIGN(NetworkChangeNotifierDelegateAndroid);
 };
 
 }  // namespace net
 
 #endif  // NET_ANDROID_NETWORK_CHANGE_NOTIFIER_DELEGATE_H_