jni_generator: Make all object-returning natives return ScopedJavaLocalRef.

chrome/browser/dom_distiller/tab_utils_android.cc

 // Copyright 2014 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/dom_distiller/tab_utils_android.h"
 
 #include <string>
 
 #include "base/android/jni_string.h"
 #include "base/prefs/pref_service.h"
@@ skipping 22 matching lines @@
                     jclass clazz,
                     jobject j_source_web_contents,
                     jobject j_destination_web_contents) {
   content::WebContents* source_web_contents =
       content::WebContents::FromJavaWebContents(j_source_web_contents);
   content::WebContents* destination_web_contents =
       content::WebContents::FromJavaWebContents(j_destination_web_contents);
   ::DistillAndView(source_web_contents, destination_web_contents);
 }
 
-jstring GetFormattedUrlFromOriginalDistillerUrl(JNIEnv* env,
-                                                jclass clazz,
-                                                jstring j_url) {
+ScopedJavaLocalRef<jstring> GetFormattedUrlFromOriginalDistillerUrl(
+    JNIEnv* env,
+    jclass clazz,
+    jstring j_url) {
   GURL url(base::android::ConvertJavaStringToUTF8(env, j_url));
   Profile* profile = ProfileManager::GetLastUsedProfile();
   std::string languages;  // Empty if Profile cannot be retrieved.
   if (profile) {
     languages = profile->GetPrefs()->GetString(prefs::kAcceptLanguages);
   }
 
   if (url.spec().length() > content::kMaxURLDisplayChars)
     url = url.IsStandard() ? url.GetOrigin() : GURL(url.scheme() + ":");
 
   // Note that we can't unescape spaces here, because if the user copies this
   // and pastes it into another program, that program may think the URL ends at
   // the space.
   return base::android::ConvertUTF16ToJavaString(
-             env, url_formatter::FormatUrl(
-                      url, languages, url_formatter::kFormatUrlOmitAll,
-                      net::UnescapeRule::NORMAL, nullptr, nullptr, nullptr))
-      .Release();
+      env, url_formatter::FormatUrl(
+               url, languages, url_formatter::kFormatUrlOmitAll,
+               net::UnescapeRule::NORMAL, nullptr, nullptr, nullptr));
 }
 
 }  // namespace android
 
 bool RegisterDomDistillerTabUtils(JNIEnv* env) {
   return android::RegisterNativesImpl(env);
 }