Convert //chrome/browser/extensions from scoped_ptr to std::unique_ptr

chrome/browser/extensions/api/top_sites/top_sites_apitest.cc

 // Copyright (c) 2012 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 <stddef.h>
 
 #include "base/values.h"
 #include "build/build_config.h"
 #include "chrome/browser/extensions/api/top_sites/top_sites_api.h"
 #include "chrome/browser/extensions/extension_function_test_utils.h"
@@ skipping 56 matching lines @@
 };
 
 }  // namespace
 
 IN_PROC_BROWSER_TEST_F(TopSitesExtensionTest, GetTopSites) {
   scoped_refptr<TopSitesGetFunction> get_top_sites_function(
       new TopSitesGetFunction());
   // Without a callback the function will not generate a result.
   get_top_sites_function->set_has_callback(true);
 
-  scoped_ptr<base::Value> result(utils::RunFunctionAndReturnSingleResult(
+  std::unique_ptr<base::Value> result(utils::RunFunctionAndReturnSingleResult(
       get_top_sites_function.get(), "[]", browser()));
   base::ListValue* list;
   ASSERT_TRUE(result->GetAsList(&list));
   EXPECT_GE(list->GetSize(), top_sites_prepopulated_pages_size());
 }
 
 }  // namespace extensions