Rewrite simple uses of base::ListValue::Append(base::Value*) on CrOS.

chrome/browser/ui/webui/options/preferences_browsertest.cc

Index: chrome/browser/ui/webui/options/preferences_browsertest.cc
diff --git a/chrome/browser/ui/webui/options/preferences_browsertest.cc b/chrome/browser/ui/webui/options/preferences_browsertest.cc
index 72355ffb77015962846f21046ecf36f9d532e194..444c9dbbf640c05dcf306cb43c2dbe144616051f 100644
--- a/chrome/browser/ui/webui/options/preferences_browsertest.cc
+++ b/chrome/browser/ui/webui/options/preferences_browsertest.cc
@@ -9,6 +9,7 @@
 #include <iostream>
 #include <memory>
 #include <sstream>
+#include <utility>
 
 #include "base/callback.h"
 #include "base/json/json_reader.h"
@@ -756,22 +757,22 @@ IN_PROC_BROWSER_TEST_F(ManagedPreferencesBrowserTest,
   // List pref.
   pref_names_.push_back(chromeos::kAccountsPrefUsers);
   base::ListValue* list = new base::ListValue;
-  list->Append(new base::StringValue("me@google.com"));
-  list->Append(new base::StringValue("you@google.com"));
+  list->AppendString("me@google.com");
+  list->AppendString("you@google.com");
   non_default_values_.push_back(list);
   list = new base::ListValue;
-  base::DictionaryValue* dict = new base::DictionaryValue;
+  auto dict = base::MakeUnique<base::DictionaryValue>();
   dict->SetString("username", "me@google.com");
   dict->SetString("name", "me@google.com");
   dict->SetString("email", "");
   dict->SetBoolean("owner", false);
-  list->Append(dict);
-  dict = new base::DictionaryValue;
+  list->Append(std::move(dict));
+  dict = base::MakeUnique<base::DictionaryValue>();
   dict->SetString("username", "you@google.com");
   dict->SetString("name", "you@google.com");
   dict->SetString("email", "");
   dict->SetBoolean("owner", false);
-  list->Append(dict);
+  list->Append(std::move(dict));
   decorated_non_default_values.push_back(list);
 
   chromeos::CrosSettings* cros_settings = chromeos::CrosSettings::Get();
@@ -950,8 +951,8 @@ IN_PROC_BROWSER_TEST_F(ProxyPreferencesBrowserTest, ChromeOSInitializeProxy) {
   // List pref.
   pref_names_.push_back(chromeos::kProxyIgnoreList);
   base::ListValue* list = new base::ListValue();
-  list->Append(new base::StringValue("*.google.com"));
-  list->Append(new base::StringValue("1.2.3.4:22"));
+  list->AppendString("*.google.com");
+  list->AppendString("1.2.3.4:22");
   non_default_values_.push_back(list);
 
   // Verify that no policy is presented to the UI. This must be verified on the