jni_generator: Pass object parameters as JavaParamRef.

chrome/browser/android/provider/chrome_browser_provider.cc

 // Copyright (c) 2012 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 "chrome/browser/android/provider/chrome_browser_provider.h"
 
 #include <cmath>
 #include <list>
 #include <utility>
 
@@ skipping 1132 matching lines @@
 
   if (date)
     row->set_search_time(ConvertJlongToTime(ConvertJLongObjectToPrimitive(
         env, date)));
 }
 
 }  // namespace
 
 // ------------- Native initialization and destruction ------------- //
 
-static jlong Init(JNIEnv* env, jobject obj) {
+static jlong Init(JNIEnv* env, const JavaParamRef<jobject>& obj) {
   ChromeBrowserProvider* provider = new ChromeBrowserProvider(env, obj);
   return reinterpret_cast<intptr_t>(provider);
 }
 
 bool ChromeBrowserProvider::RegisterChromeBrowserProvider(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 ChromeBrowserProvider::ChromeBrowserProvider(JNIEnv* env, jobject obj)
     : weak_java_provider_(env, obj),
@@ skipping 480 matching lines @@
   ScopedJavaLocalRef<jobject> obj = weak_java_provider_.get(env);
   if (obj.is_null())
     return;
   Java_ChromeBrowserProvider_onSearchTermChanged(env, obj.obj());
 }
 
 void ChromeBrowserProvider::OnKeywordSearchTermDeleted(
     history::HistoryService* history_service,
     history::URLID url_id) {
 }