Add missing using declarations in cronet code.

components/cronet/android/test/network_change_notifier_util.cc

 // Copyright 2014 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.
 
 #include "network_change_notifier_util.h"
 
 #include "base/android/jni_android.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "jni/NetworkChangeNotifierUtil_jni.h"
 #include "net/base/network_change_notifier.h"
 
+using base::android::JavaParamRef;
+
 namespace cronet {
 
 namespace {
 
 // An IPAddressObserver to test whether Cronet can receive notification
 // when network changes.
 class TestIPAddressObserver
     : public net::NetworkChangeNotifier::IPAddressObserver {
  public:
   TestIPAddressObserver() : ip_address_changed_(false) {
@@ skipping 35 matching lines @@
   net::NetworkChangeNotifier::RemoveIPAddressObserver(&test_observer);
 
   return test_observer.ip_address_changed();
 }
 
 bool RegisterNetworkChangeNotifierUtil(JNIEnv* jenv) {
   return RegisterNativesImpl(jenv);
 }
 
 }  // namespace cronet