jni_generator: Make all object-returning natives return ScopedJavaLocalRef.

chrome/browser/android/preferences/autofill/autofill_profile_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/preferences/autofill/autofill_profile_bridge.h"
 
 #include <jni.h>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
@@ skipping 28 matching lines @@
                        // a suburb).
   SORTING_CODE,        // Sorting code.
   POSTAL_CODE,         // Zip or postal code.
   STREET_ADDRESS,      // Street address lines.
   ORGANIZATION,        // Organization, company, firm, institution, etc.
   RECIPIENT            // Name.
 };
 
 } // namespace
 
-static jstring GetDefaultCountryCode(JNIEnv* env,
-                                    jclass clazz) {
+static ScopedJavaLocalRef<jstring> GetDefaultCountryCode(JNIEnv* env,
+                                                         jclass clazz) {
   std::string default_country_code =
       autofill::AutofillCountry::CountryCodeForLocale(
           g_browser_process->GetApplicationLocale());
-  return ConvertUTF8ToJavaString(env, default_country_code).Release();
+  return ConvertUTF8ToJavaString(env, default_country_code);
 }
 
 static void GetSupportedCountries(JNIEnv* env,
                                   jclass clazz,
                                   jobject j_country_code_list,
                                   jobject j_country_name_list) {
   std::vector<std::string> country_codes =
       ::i18n::addressinput::GetRegionCodes();
   std::vector<std::string> known_country_codes;
   std::vector<base::string16> known_country_names;
   std::string locale = g_browser_process->GetApplicationLocale();
   for (auto country_code : country_codes) {
     const base::string16& country_name =
         l10n_util::GetDisplayNameForCountry(country_code, locale);
     // Don't display a country code for which a name is not known yet.
     if (country_name != base::UTF8ToUTF16(country_code)) {
       known_country_codes.push_back(country_code);
       known_country_names.push_back(country_name);
     }
   }
 
   Java_AutofillProfileBridge_stringArrayToList(
       env, ToJavaArrayOfStrings(env, known_country_codes).obj(),
       j_country_code_list);
   Java_AutofillProfileBridge_stringArrayToList(
       env, ToJavaArrayOfStrings(env, known_country_names).obj(),
       j_country_name_list);
 }
 
-static jstring GetAddressUiComponents(JNIEnv* env,
-                                   jclass clazz,
-                                   jstring j_country_code,
-                                   jstring j_language_code,
-                                   jobject j_id_list,
-                                   jobject j_name_list) {
+static ScopedJavaLocalRef<jstring> GetAddressUiComponents(
+    JNIEnv* env,
+    jclass clazz,
+    jstring j_country_code,
+    jstring j_language_code,
+    jobject j_id_list,
+    jobject j_name_list) {
   std::string best_language_tag;
   std::vector<int> component_ids;
   std::vector<std::string> component_labels;
   ::i18n::addressinput::Localization localization;
   localization.SetGetter(l10n_util::GetStringUTF8);
 
   std::string language_code;
   if (j_language_code != NULL) {
     language_code = ConvertJavaStringToUTF8(env, j_language_code);
   }
@@ skipping 44 matching lines @@
 
   Java_AutofillProfileBridge_intArrayToList(env,
                                             ToJavaIntArray(
                                                    env, component_ids).obj(),
                                                j_id_list);
   Java_AutofillProfileBridge_stringArrayToList(env,
                                                ToJavaArrayOfStrings(
                                                    env, component_labels).obj(),
                                                j_name_list);
 
-  return ConvertUTF8ToJavaString(env, best_language_tag).Release();
+  return ConvertUTF8ToJavaString(env, best_language_tag);
 }
 
 // static
 bool RegisterAutofillProfileBridge(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 } // namespace autofill