Let net_unittests build with the components build on android

net/android/network_change_notifier_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_ANDROID_H_
 #define NET_ANDROID_NETWORK_CHANGE_NOTIFIER_ANDROID_H_
 
 #include "base/android/jni_android.h"
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
@@ skipping 21 matching lines @@
 //   thread.
 // NetworkChangeNotifierFactoryAndroid ('Factory') - Creates the Delegate on the
 //   main thread to receive JNI events, and vends Notifiers. Lives exclusively
 //   on main application thread, and outlives all other classes.
 // NetworkChangeNotifierAndroid ('Notifier') - Receives event notifications from
 //   the Delegate. Processes and forwards these events to the
 //   NetworkChangeNotifier observers on their threads. May live on any thread
 //   and be called by any thread.
 //
 // For more details, see the implementation file.
-class NetworkChangeNotifierAndroid
+class NET_EXPORT_PRIVATE NetworkChangeNotifierAndroid
     : public NetworkChangeNotifier,
       public NetworkChangeNotifierDelegateAndroid::Observer {
  public:
   virtual ~NetworkChangeNotifierAndroid();
 
   // NetworkChangeNotifier:
   virtual ConnectionType GetCurrentConnectionType() const OVERRIDE;
 
   // NetworkChangeNotifierDelegateAndroid::Observer:
   virtual void OnConnectionTypeChanged(
@@ skipping 13 matching lines @@
   NetworkChangeNotifierDelegateAndroid* const delegate_;
   mutable base::Lock connection_type_lock_;  // Protects the state below.
   ConnectionType connection_type_;
 
   DISALLOW_COPY_AND_ASSIGN(NetworkChangeNotifierAndroid);
 };
 
 }  // namespace net
 
 #endif  // NET_ANDROID_NETWORK_CHANGE_NOTIFIER_ANDROID_H_