Add missing using declarations in cronet code.

components/cronet/android/test/test_upload_data_stream_handler.cc

 // Copyright 2015 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 "components/cronet/android/test/test_upload_data_stream_handler.h"
 
 #include <stddef.h>
 #include <string>
 #include <utility>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/bind.h"
 #include "jni/TestUploadDataStreamHandler_jni.h"
 #include "net/base/net_errors.h"
 
+using base::android::JavaParamRef;
+
 namespace cronet {
 
 static const size_t kReadBufferSize = 32768;
 
 TestUploadDataStreamHandler::TestUploadDataStreamHandler(
     std::unique_ptr<net::UploadDataStream> upload_data_stream,
     JNIEnv* env,
     jobject jtest_upload_data_stream_handler)
     : init_callback_invoked_(false),
       read_callback_invoked_(false),
@@ skipping 158 matching lines @@
   TestUploadDataStreamHandler* handler = new TestUploadDataStreamHandler(
       std::move(upload_data_stream), env, jtest_upload_data_stream_handler);
   return reinterpret_cast<jlong>(handler);
 }
 
 bool TestUploadDataStreamHandlerRegisterJni(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace cronet