jni_generator: Pass object parameters as JavaParamRef.

chrome/browser/android/recently_closed_tabs_bridge.cc

Index: chrome/browser/android/recently_closed_tabs_bridge.cc
diff --git a/chrome/browser/android/recently_closed_tabs_bridge.cc b/chrome/browser/android/recently_closed_tabs_bridge.cc
index 0049595d9a3a612c8a2cd27c72dd582979efbde1..2115590c95bbec122daa10f858482d273d8792ef 100644
--- a/chrome/browser/android/recently_closed_tabs_bridge.cc
+++ b/chrome/browser/android/recently_closed_tabs_bridge.cc
@@ -157,7 +157,9 @@ void RecentlyClosedTabsBridge::EnsureTabRestoreService() {
   }
 }
 
-static jlong Init(JNIEnv* env, jobject obj, jobject jprofile) {
+static jlong Init(JNIEnv* env,
+                  const JavaParamRef<jobject>& obj,
+                  const JavaParamRef<jobject>& jprofile) {
   RecentlyClosedTabsBridge* bridge = new RecentlyClosedTabsBridge(
       ProfileAndroid::FromProfileAndroid(jprofile));
   return reinterpret_cast<intptr_t>(bridge);