Rewrite simple uses of base::ListValue::Append() taking a raw pointer var.

components/printing/test/print_web_view_helper_browsertest.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 "components/printing/renderer/print_web_view_helper.h"
+
 #include <stddef.h>
 
+#include <memory>
 #include <tuple>
+#include <utility>
 
 #include "base/command_line.h"
 #include "base/macros.h"
 #include "base/run_loop.h"
 #include "build/build_config.h"
 #include "components/printing/common/print_messages.h"
-#include "components/printing/renderer/print_web_view_helper.h"
 #include "components/printing/test/mock_printer.h"
 #include "components/printing/test/print_mock_render_thread.h"
 #include "components/printing/test/print_test_content_renderer_client.h"
 #include "content/public/renderer/render_view.h"
 #include "content/public/test/render_view_test.h"
 #include "ipc/ipc_listener.h"
 #include "printing/print_job_constants.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/WebKit/public/platform/WebString.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
@@ skipping 837 matching lines @@
 TEST_F(MAYBE_PrintWebViewHelperPreviewTest, OnPrintPreviewForSelectedPages) {
   LoadHTML(kMultipageHTML);
 
   // Fill in some dummy values.
   base::DictionaryValue dict;
   CreatePrintSettingsDictionary(&dict);
 
   // Set a page range and update the dictionary to generate only the complete
   // metafile with the selected pages. Page numbers used in the dictionary
   // are 1-based.
-  base::DictionaryValue* page_range = new base::DictionaryValue();
+  std::unique_ptr<base::DictionaryValue> page_range(
+      new base::DictionaryValue());
   page_range->SetInteger(kSettingPageRangeFrom, 2);
   page_range->SetInteger(kSettingPageRangeTo, 3);
 
   base::ListValue* page_range_array = new base::ListValue();
-  page_range_array->Append(page_range);
+  page_range_array->Append(std::move(page_range));
 
   dict.Set(kSettingPageRange, page_range_array);
   dict.SetBoolean(kSettingGenerateDraftData, false);
 
   OnPrintPreview(dict);
 
   VerifyDidPreviewPage(false, 0);
   VerifyDidPreviewPage(false, 1);
   VerifyDidPreviewPage(false, 2);
   VerifyPreviewPageCount(3);
@@ skipping 163 matching lines @@
 
   VerifyPrintFailed(true);
   VerifyPagesPrinted(false);
 }
 #endif  // defined(ENABLE_BASIC_PRINTING)
 #endif  // defined(ENABLE_PRINT_PREVIEW)
 
 #endif  // !defined(OS_CHROMEOS)
 
 }  // namespace printing