jni: Pass method parameters as JavaParamRef in content.

content/browser/mojo/service_registry_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 "content/browser/mojo/service_registry_android.h"
 
 #include <utility>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
@@ skipping 39 matching lines @@
   obj_.Reset(
       env,
       Java_ServiceRegistry_create(env, reinterpret_cast<intptr_t>(this)).obj());
 }
 
 ServiceRegistryAndroid::~ServiceRegistryAndroid() {
   Java_ServiceRegistry_destroy(AttachCurrentThread(), obj_.obj());
 }
 
 // Methods called from Java.
-void ServiceRegistryAndroid::AddService(JNIEnv* env,
-                                        jobject j_service_registry,
-                                        jobject j_manager,
-                                        jobject j_factory,
-                                        jstring j_name) {
+void ServiceRegistryAndroid::AddService(
+    JNIEnv* env,
+    const JavaParamRef<jobject>& j_service_registry,
+    const JavaParamRef<jobject>& j_manager,
+    const JavaParamRef<jobject>& j_factory,
+    const JavaParamRef<jstring>& j_name) {
   std::string name(ConvertJavaStringToUTF8(env, j_name));
 
   ScopedJavaGlobalRef<jobject> j_scoped_service_registry;
   j_scoped_service_registry.Reset(env, j_service_registry);
 
   ScopedJavaGlobalRef<jobject> j_scoped_manager;
   j_scoped_manager.Reset(env, j_manager);
 
   ScopedJavaGlobalRef<jobject> j_scoped_factory;
   j_scoped_factory.Reset(env, j_factory);
 
   service_registry_->Add(name,
                          base::Bind(&CreateImplAndAttach,
                                     j_scoped_service_registry,
                                     j_scoped_manager, j_scoped_factory));
 }
 
-void ServiceRegistryAndroid::RemoveService(JNIEnv* env,
-                                           jobject j_service_registry,
-                                           jstring j_name) {
+void ServiceRegistryAndroid::RemoveService(
+    JNIEnv* env,
+    const JavaParamRef<jobject>& j_service_registry,
+    const JavaParamRef<jstring>& j_name) {
   std::string name(ConvertJavaStringToUTF8(env, j_name));
   service_registry_->Remove(name);
 }
 
-void ServiceRegistryAndroid::ConnectToRemoteService(JNIEnv* env,
-                                                    jobject j_service_registry,
-                                                    jstring j_name,
-                                                    jint j_handle) {
+void ServiceRegistryAndroid::ConnectToRemoteService(
+    JNIEnv* env,
+    const JavaParamRef<jobject>& j_service_registry,
+    const JavaParamRef<jstring>& j_name,
+    jint j_handle) {
   std::string name(ConvertJavaStringToUTF8(env, j_name));
   mojo::ScopedMessagePipeHandle handle((mojo::MessagePipeHandle(j_handle)));
   service_registry_->Connect(name, std::move(handle));
 }
 
 }  // namespace content