Update SupportsUserData uses with unique_ptr.

components/safe_browsing/base_ui_manager.cc

Index: components/safe_browsing/base_ui_manager.cc
diff --git a/components/safe_browsing/base_ui_manager.cc b/components/safe_browsing/base_ui_manager.cc
index f951896d15ed7a225595073545f47c685472d31c..cd8940d9e1c7ecd423f80e290a6704881c332224 100644
--- a/components/safe_browsing/base_ui_manager.cc
+++ b/components/safe_browsing/base_ui_manager.cc
@@ -7,6 +7,7 @@
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/i18n/rtl.h"
+#include "base/memory/ptr_util.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/supports_user_data.h"
 #include "components/safe_browsing/base_blocking_page.h"
@@ -86,7 +87,7 @@ WhitelistUrlSet* GetOrCreateWhitelist(WebContents* web_contents) {
       static_cast<WhitelistUrlSet*>(web_contents->GetUserData(kWhitelistKey));
   if (!site_list) {
     site_list = new WhitelistUrlSet;
-    web_contents->SetUserData(kWhitelistKey, site_list);
+    web_contents->SetUserData(kWhitelistKey, base::WrapUnique(site_list));
   }
   return site_list;
 }