jni_generator: Pass object parameters as JavaParamRef.

net/test/embedded_test_server/android/embedded_test_server_android.cc

Index: net/test/embedded_test_server/android/embedded_test_server_android.cc
diff --git a/net/test/embedded_test_server/android/embedded_test_server_android.cc b/net/test/embedded_test_server/android/embedded_test_server_android.cc
index 7cca9d933fcc86495da844b07b509f8d85bbbbcb..9ba38862e8e47a1444ec5d7c28864ff703e02804 100644
--- a/net/test/embedded_test_server/android/embedded_test_server_android.cc
+++ b/net/test/embedded_test_server/android/embedded_test_server_android.cc
@@ -57,7 +57,7 @@ void EmbeddedTestServerAndroid::Destroy(JNIEnv* env, jobject jobj) {
   delete this;
 }
 
-static void Init(JNIEnv* env, jobject jobj) {
+static void Init(JNIEnv* env, const JavaParamRef<jobject>& jobj) {
   TRACE_EVENT0("native", "EmbeddedTestServerAndroid::Init");
   new EmbeddedTestServerAndroid(env, jobj);
 }