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

chrome/browser/extensions/api/webrtc_audio_private/webrtc_audio_private_browsertest.cc

 // Copyright 2013 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 <memory>
+#include <utility>
+
 #include "base/json/json_writer.h"
 #include "base/run_loop.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/platform_thread.h"
 #include "base/time/time.h"
 #include "base/win/windows_version.h"
 #include "build/build_config.h"
@@ skipping 66 matching lines @@
                            base::WaitableEvent::InitialState::NOT_SIGNALED) {}
 
   void SetUpOnMainThread() override {
     AudioWaitingExtensionTest::SetUpOnMainThread();
     // Needs to happen after chrome's schemes are added.
     source_url_ = GURL("chrome-extension://fakeid012345678/fakepage.html");
   }
 
  protected:
   void AppendTabIdToRequestInfo(base::ListValue* params, int tab_id) {
-    base::DictionaryValue* request_info = new base::DictionaryValue();
+    std::unique_ptr<base::DictionaryValue> request_info(
+        new base::DictionaryValue());
     request_info->SetInteger("tabId", tab_id);
-    params->Append(request_info);
+    params->Append(std::move(request_info));
   }
 
   std::string InvokeGetActiveSink(int tab_id) {
     base::ListValue parameters;
     AppendTabIdToRequestInfo(&parameters, tab_id);
     std::string parameter_string;
     JSONWriter::Write(parameters, &parameter_string);
 
     scoped_refptr<WebrtcAudioPrivateGetActiveSinkFunction> function =
         new WebrtcAudioPrivateGetActiveSinkFunction();
@@ skipping 321 matching lines @@
   title_watcher.AlsoWaitForTitle(base::ASCIIToUTF16("failure"));
   base::string16 result = title_watcher.WaitAndGetTitle();
   EXPECT_EQ(base::ASCIIToUTF16("success"), result);
 
   g_browser_process->webrtc_log_uploader()->OverrideUploadWithBufferForTesting(
       NULL);
 }
 #endif  // defined(GOOGLE_CHROME_BUILD) || defined(ENABLE_HANGOUT_SERVICES_EXTENSION)
 
 }  // namespace extensions