Add missing using statements for JNI types.

net/android/cert_verify_result_android.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 "net/android/cert_verify_result_android.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
 #include "jni/AndroidCertVerifyResult_jni.h"
 
 using base::android::AttachCurrentThread;
 using base::android::JavaArrayOfByteArrayToStringVector;
+using base::android::ScopedJavaLocalRef;
 
 namespace net {
 namespace android {
 
 void ExtractCertVerifyResult(jobject result,
                              CertVerifyStatusAndroid* status,
                              bool* is_issued_by_known_root,
                              std::vector<std::string>* verified_chain) {
   JNIEnv* env = AttachCurrentThread();
 
   *status = static_cast<CertVerifyStatusAndroid>(
       Java_AndroidCertVerifyResult_getStatus(env, result));
 
   *is_issued_by_known_root =
       Java_AndroidCertVerifyResult_isIssuedByKnownRoot(env, result);
 
   ScopedJavaLocalRef<jobjectArray> chain_byte_array =
       Java_AndroidCertVerifyResult_getCertificateChainEncoded(env, result);
   JavaArrayOfByteArrayToStringVector(
       env, chain_byte_array.obj(), verified_chain);
 }
 
 }  // namespace android
 }  // namespace net