jni_generator: Pass object parameters as JavaParamRef.

components/cronet/android/test/quic_test_server.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 "quic_test_server.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/bind.h"
 #include "base/files/file_path.h"
@@ skipping 38 matching lines @@
   DCHECK(g_quic_server_thread->task_runner()->BelongsToCurrentThread());
   g_quic_server->Shutdown();
   delete g_quic_server;
 }
 
 }  // namespace
 
 // Quic server is currently hardcoded to run on port 6121 of the localhost on
 // the device.
 void StartQuicTestServer(JNIEnv* env,
-                         jclass /*jcaller*/,
-                         jstring jtest_files_root) {
+                         const JavaParamRef<jclass>& /*jcaller*/,
+                         const JavaParamRef<jstring>& jtest_files_root) {
   DCHECK(!g_quic_server_thread);
   g_quic_server_thread = new base::Thread("quic server thread");
   base::Thread::Options thread_options;
   thread_options.message_loop_type = base::MessageLoop::TYPE_IO;
   bool started = g_quic_server_thread->StartWithOptions(thread_options);
   DCHECK(started);
   base::FilePath test_files_root(
       base::android::ConvertJavaStringToUTF8(env, jtest_files_root));
   g_quic_server_thread->task_runner()->PostTask(
       FROM_HERE, base::Bind(&ServeFilesFromDirectory, test_files_root));
 }
 
-void ShutdownQuicTestServer(JNIEnv* env, jclass /*jcaller*/) {
+void ShutdownQuicTestServer(JNIEnv* env,
+                            const JavaParamRef<jclass>& /*jcaller*/) {
   DCHECK(!g_quic_server_thread->task_runner()->BelongsToCurrentThread());
   g_quic_server_thread->task_runner()->PostTask(
       FROM_HERE, base::Bind(&ShutdownOnServerThread));
   delete g_quic_server_thread;
 }
 
-ScopedJavaLocalRef<jstring> GetServerHost(JNIEnv* env, jclass /*jcaller*/) {
+ScopedJavaLocalRef<jstring> GetServerHost(
+    JNIEnv* env,
+    const JavaParamRef<jclass>& /*jcaller*/) {
   return base::android::ConvertUTF8ToJavaString(env, kServerHost);
 }
 
-int GetServerPort(JNIEnv* env, jclass /*jcaller*/) {
+int GetServerPort(JNIEnv* env, const JavaParamRef<jclass>& /*jcaller*/) {
   return kServerPort;
 }
 
 bool RegisterQuicTestServer(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace cronet