jni_generator: Pass object parameters as JavaParamRef.

base/android/path_service_android.cc

Index: base/android/path_service_android.cc
diff --git a/base/android/path_service_android.cc b/base/android/path_service_android.cc
index 18ca70c8abd8a00e898791f37bd000fc3b13a4e7..9972bbb6ca35f70ea7613330c9a6ed3b1ba0cff8 100644
--- a/base/android/path_service_android.cc
+++ b/base/android/path_service_android.cc
@@ -13,7 +13,10 @@
 namespace base {
 namespace android {
 
-void Override(JNIEnv* env, jclass clazz, jint what, jstring path) {
+void Override(JNIEnv* env,
+              const JavaParamRef<jclass>& clazz,
+              jint what,
+              const JavaParamRef<jstring>& path) {
   FilePath file_path(ConvertJavaStringToUTF8(env, path));
   PathService::Override(what, file_path);
 }