jni_generator: Pass object parameters as JavaParamRef.

chrome/browser/android/bottombar/contextualsearch/contextual_search_panel.cc

Index: chrome/browser/android/bottombar/contextualsearch/contextual_search_panel.cc
diff --git a/chrome/browser/android/bottombar/contextualsearch/contextual_search_panel.cc b/chrome/browser/android/bottombar/contextualsearch/contextual_search_panel.cc
index 41235e3ba4f94d1a08d6c60e7e81dca35d9d4291..0d9d7b0414d24a3cda3e8fcbaec4ee71a0e8649e 100644
--- a/chrome/browser/android/bottombar/contextualsearch/contextual_search_panel.cc
+++ b/chrome/browser/android/bottombar/contextualsearch/contextual_search_panel.cc
@@ -141,7 +141,7 @@ bool RegisterContextualSearchPanel(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
-jlong Init(JNIEnv* env, jobject obj) {
+jlong Init(JNIEnv* env, const JavaParamRef<jobject>& obj) {
   ContextualSearchPanel* manager = new ContextualSearchPanel(env, obj);
   return reinterpret_cast<intptr_t>(manager);
 }