Move TestingPrefService to use unique_ptr<Value>

chrome/browser/chromeos/printing/printers_manager_unittest.cc

 // Copyright 2016 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/chromeos/printing/printers_manager.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 178 matching lines @@
 
   std::string second_printer = kLexJson;
 
   auto value = base::MakeUnique<base::ListValue>();
   value->AppendString(first_printer);
   value->AppendString(second_printer);
 
   sync_preferences::TestingPrefServiceSyncable* prefs =
       profile_->GetTestingPrefService();
   // TestingPrefSyncableService assumes ownership of |value|.
-  prefs->SetManagedPref(prefs::kRecommendedNativePrinters, value.release());
+  prefs->SetManagedPref(prefs::kRecommendedNativePrinters, std::move(value));
 
   auto printers = manager_->GetRecommendedPrinters();
   ASSERT_EQ(2U, printers.size());
   EXPECT_EQ("Color Laser", printers[0]->display_name());
   EXPECT_EQ("ipp://192.168.1.5", printers[1]->uri());
   EXPECT_EQ(Printer::Source::SRC_POLICY, printers[1]->source());
 }
 
 TEST_F(PrintersManagerTest, GetRecommendedPrinter) {
   std::string printer = kLexJson;
   auto value = base::MakeUnique<base::ListValue>();
   value->AppendString(printer);
 
   sync_preferences::TestingPrefServiceSyncable* prefs =
       profile_->GetTestingPrefService();
   // TestingPrefSyncableService assumes ownership of |value|.
-  prefs->SetManagedPref(prefs::kRecommendedNativePrinters, value.release());
+  prefs->SetManagedPref(prefs::kRecommendedNativePrinters, std::move(value));
 
   auto printers = manager_->GetRecommendedPrinters();
 
   const Printer& from_list = *(printers.front());
   std::unique_ptr<Printer> retrieved = manager_->GetPrinter(from_list.id());
 
   EXPECT_EQ(from_list.id(), retrieved->id());
   EXPECT_EQ("LexaPrint", from_list.display_name());
   EXPECT_EQ(Printer::Source::SRC_POLICY, from_list.source());
 }
 
 }  // namespace chromeos