Change more base::ListValue methods to use std::unique_ptr.

chrome/browser/ui/webui/signin/inline_login_ui_browsertest.cc

Index: chrome/browser/ui/webui/signin/inline_login_ui_browsertest.cc
diff --git a/chrome/browser/ui/webui/signin/inline_login_ui_browsertest.cc b/chrome/browser/ui/webui/signin/inline_login_ui_browsertest.cc
index 2cb317b709f05c8d689a017d4d8d608332a16a40..a8191be9fa4f2fd3d571abcb237af094610b65af 100644
--- a/chrome/browser/ui/webui/signin/inline_login_ui_browsertest.cc
+++ b/chrome/browser/ui/webui/signin/inline_login_ui_browsertest.cc
@@ -4,6 +4,7 @@
 
 #include "base/command_line.h"
 #include "base/macros.h"
+#include "base/memory/ptr_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/run_loop.h"
 #include "base/strings/utf_string_conversions.h"
@@ -287,7 +288,7 @@ void InlineLoginUIBrowserTest::AddEmailToOneClickRejectedList(
   PrefService* pref_service = browser()->profile()->GetPrefs();
   ListPrefUpdate updater(pref_service,
                          prefs::kReverseAutologinRejectedEmailList);
-  updater->AppendIfNotPresent(new base::StringValue(email));
+  updater->AppendIfNotPresent(base::MakeUnique<base::StringValue>(email));
 }
 
 void InlineLoginUIBrowserTest::AllowSigninCookies(bool enable) {