Move TestingPrefService to use unique_ptr<Value>

chrome/browser/plugins/plugin_info_message_filter_unittest.cc

Index: chrome/browser/plugins/plugin_info_message_filter_unittest.cc
diff --git a/chrome/browser/plugins/plugin_info_message_filter_unittest.cc b/chrome/browser/plugins/plugin_info_message_filter_unittest.cc
index 15b0f4f7c1fb5164da799dbfc53856e69af5a2c5..ea76024c0c31f3cfe76ef4bd91cf598270343147 100644
--- a/chrome/browser/plugins/plugin_info_message_filter_unittest.cc
+++ b/chrome/browser/plugins/plugin_info_message_filter_unittest.cc
@@ -323,7 +323,7 @@ TEST_F(PluginInfoMessageFilterTest, GetPluginContentSetting) {
   sync_preferences::TestingPrefServiceSyncable* prefs =
       profile()->GetTestingPrefService();
   prefs->SetManagedPref(prefs::kManagedDefaultPluginsSetting,
-                        new base::Value(CONTENT_SETTING_BLOCK));
+                        base::MakeUnique<base::Value>(CONTENT_SETTING_BLOCK));
 
   // All plugins should be blocked now.
   VerifyPluginContentSetting(host, "foo", CONTENT_SETTING_BLOCK, true, true);