Enable use_once_callback for //content/common/*.mojom

content/browser/loader/mojo_async_resource_handler_unittest.cc

Index: content/browser/loader/mojo_async_resource_handler_unittest.cc
diff --git a/content/browser/loader/mojo_async_resource_handler_unittest.cc b/content/browser/loader/mojo_async_resource_handler_unittest.cc
index dc175b44e21134bb886aed1acfe1109e65dc1490..906c85fe5e2fd48d30f736ed2907b45ae6cff14e 100644
--- a/content/browser/loader/mojo_async_resource_handler_unittest.cc
+++ b/content/browser/loader/mojo_async_resource_handler_unittest.cc
@@ -310,7 +310,7 @@ class TestURLLoaderFactory final : public mojom::URLLoaderFactory {
   void SyncLoad(int32_t routing_id,
                 int32_t request_id,
                 const ResourceRequest& url_request,
-                const SyncLoadCallback& callback) override {
+                SyncLoadCallback callback) override {
     NOTREACHED();
   }