Switch SupportsUserData uses to use unique_ptr.

extensions/browser/guest_view/web_view/web_view_content_script_manager.cc

Index: extensions/browser/guest_view/web_view/web_view_content_script_manager.cc
diff --git a/extensions/browser/guest_view/web_view/web_view_content_script_manager.cc b/extensions/browser/guest_view/web_view/web_view_content_script_manager.cc
index 032ea7a4a1cd81405e086a67bfc8b1213a8ab044..01bb24a2f70ac1931041f0d11e52013da5f45d72 100644
--- a/extensions/browser/guest_view/web_view/web_view_content_script_manager.cc
+++ b/extensions/browser/guest_view/web_view/web_view_content_script_manager.cc
@@ -4,6 +4,7 @@
 
 #include "extensions/browser/guest_view/web_view/web_view_content_script_manager.h"
 
+#include "base/memory/ptr_util.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/navigation_details.h"
@@ -36,7 +37,7 @@ WebViewContentScriptManager* WebViewContentScriptManager::Get(
   if (!manager) {
     manager = new WebViewContentScriptManager(browser_context);
     browser_context->SetUserData(webview::kWebViewContentScriptManagerKeyName,
-                                 manager);
+                                 base::WrapUnique(manager));
   }
   return manager;
 }