base::ListValue::Append cleanup: pass unique_ptr instead of the released pointer.

chrome/browser/extensions/api/settings_private/settings_private_delegate.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/extensions/api/settings_private/settings_private_delegate.h"
 
 #include <utility>
 
 #include "base/values.h"
 #include "chrome/browser/browser_process.h"
@@ skipping 29 matching lines @@
   return pref->ToValue();
 }
 
 std::unique_ptr<base::Value> SettingsPrivateDelegate::GetAllPrefs() {
   std::unique_ptr<base::ListValue> prefs(new base::ListValue());
 
   const TypedPrefMap& keys = prefs_util_->GetWhitelistedKeys();
   for (const auto& it : keys) {
     std::unique_ptr<base::Value> pref = GetPref(it.first);
     if (!pref->IsType(base::Value::TYPE_NULL))
-      prefs->Append(pref.release());
+      prefs->Append(std::move(pref));
   }
 
   return std::move(prefs);
 }
 
 PrefsUtil::SetPrefResult SettingsPrivateDelegate::SetPref(
     const std::string& pref_name, const base::Value* value) {
   return prefs_util_->SetPref(pref_name, value);
 }
 
 std::unique_ptr<base::Value> SettingsPrivateDelegate::GetDefaultZoomPercent() {
   double zoom = content::ZoomLevelToZoomFactor(
       profile_->GetZoomLevelPrefs()->GetDefaultZoomLevelPref()) * 100;
   std::unique_ptr<base::Value> value(new base::FundamentalValue(zoom));
   return value;
 }
 
 PrefsUtil::SetPrefResult SettingsPrivateDelegate::SetDefaultZoomPercent(
     int percent) {
   double zoom_factor = content::ZoomFactorToZoomLevel(percent * 0.01);
   profile_->GetZoomLevelPrefs()->SetDefaultZoomLevelPref(zoom_factor);
   return PrefsUtil::SetPrefResult::SUCCESS;
 }
 
 }  // namespace extensions