Update SupportsUserData uses with unique_ptr.

content/browser/loader/resource_dispatcher_host_unittest.cc

Index: content/browser/loader/resource_dispatcher_host_unittest.cc
diff --git a/content/browser/loader/resource_dispatcher_host_unittest.cc b/content/browser/loader/resource_dispatcher_host_unittest.cc
index a41dfff2e95006f8f4f22b965794302f726692a0..71ed563b6bf64440a2229e35586992f30d144e69 100644
--- a/content/browser/loader/resource_dispatcher_host_unittest.cc
+++ b/content/browser/loader/resource_dispatcher_host_unittest.cc
@@ -751,7 +751,7 @@ class TestResourceDispatcherHostDelegate
       std::vector<std::unique_ptr<ResourceThrottle>>* throttles) override {
     if (user_data_) {
       const void* key = user_data_.get();
-      request->SetUserData(key, user_data_.release());
+      request->SetUserData(key, std::move(user_data_));
     }
 
     if (flags_ != NONE) {