jni_generator: Pass object parameters as JavaParamRef.

chrome/browser/android/offline_pages/offline_page_bridge.cc

 // Copyright 2015 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/offline_pages/offline_page_bridge.h"
 
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/basictypes.h"
 #include "base/files/file_path.h"
@@ skipping 49 matching lines @@
         env, j_result_obj,
         ConvertUTF8ToJavaString(env, offline_page.url.spec()).obj(),
         offline_page.bookmark_id,
         ConvertUTF8ToJavaString(env, offline_page.GetOfflineURL().spec()).obj(),
         offline_page.file_size);
   }
 }
 
 }  // namespace
 
-static jboolean IsOfflinePagesEnabled(JNIEnv* env, jclass clazz) {
+static jboolean IsOfflinePagesEnabled(JNIEnv* env,
+                                      const JavaParamRef<jclass>& clazz) {
   return offline_pages::IsOfflinePagesEnabled();
 }
 
 OfflinePageBridge::OfflinePageBridge(JNIEnv* env,
                                      jobject obj,
                                      content::BrowserContext* browser_context)
     : weak_java_ref_(env, obj),
       offline_page_model_(OfflinePageModelFactory::GetForBrowserContext(
           browser_context)),
       browser_context_(browser_context) {
@@ skipping 127 matching lines @@
   content::DownloadManager* manager =
       content::BrowserContext::GetDownloadManager(browser_context);
   if (!manager) {
     DVLOG(1) << "No download manager available in offline page bridge";
     return base::FilePath();
   }
 
   return DownloadPrefs::FromDownloadManager(manager)->DownloadPath();
 }
 
-static jlong Init(JNIEnv* env, jobject obj, jobject j_profile) {
+static jlong Init(JNIEnv* env,
+                  const JavaParamRef<jobject>& obj,
+                  const JavaParamRef<jobject>& j_profile) {
   return reinterpret_cast<jlong>(new OfflinePageBridge(
       env, obj, ProfileAndroid::FromProfileAndroid(j_profile)));
 }
 
 bool RegisterOfflinePageBridge(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace android
 }  // namespace offline_pages