jni_generator: Make all object-returning natives return ScopedJavaLocalRef.

chrome/browser/android/chrome_application.cc

 // Copyright 2013 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/chrome_application.h"
 
 #include <vector>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
@@ skipping 63 matching lines @@
 void ChangeAppStatusOnIOThread(SafeBrowsingService* sb_service,
                                jboolean foreground) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
   SafeBrowsingProtocolManager* proto_manager = sb_service->protocol_manager();
   if (proto_manager)
     proto_manager->SetAppInForeground(foreground);
 }
 
 }  // namespace
 
-static jstring GetBrowserUserAgent(JNIEnv* env, jclass clazz) {
-  return ConvertUTF8ToJavaString(env, GetUserAgent()).Release();
+static ScopedJavaLocalRef<jstring> GetBrowserUserAgent(JNIEnv* env,
+                                                       jclass clazz) {
+  return ConvertUTF8ToJavaString(env, GetUserAgent());
 }
 
 static void FlushPersistentData(JNIEnv* env, jclass obj) {
   // Commit the prending writes for all the loaded profiles.
   std::vector<Profile*> loaded_profiles =
       g_browser_process->profile_manager()->GetLoadedProfiles();
   std::for_each(loaded_profiles.begin(), loaded_profiles.end(),
                 CommitPendingWritesForProfile);
 
   if (g_browser_process->local_state())
@@ skipping 46 matching lines @@
 }
 
 bool ChromeApplication::AreParentalControlsEnabled() {
   return Java_ChromeApplication_areParentalControlsEnabled(
       base::android::AttachCurrentThread(),
       base::android::GetApplicationContext());
 }
 
 }  // namespace android
 }  // namespace chrome