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

content/browser/loader/url_loader_factory_impl.h

Index: content/browser/loader/url_loader_factory_impl.h
diff --git a/content/browser/loader/url_loader_factory_impl.h b/content/browser/loader/url_loader_factory_impl.h
index e7bea1b151d416276120cc87194cc3890596fabb..585b21443f2f4b85aed040ee442ecfb966d461f4 100644
--- a/content/browser/loader/url_loader_factory_impl.h
+++ b/content/browser/loader/url_loader_factory_impl.h
@@ -31,7 +31,7 @@ class URLLoaderFactoryImpl final : public mojom::URLLoaderFactory {
   void SyncLoad(int32_t routing_id,
                 int32_t request_id,
                 const ResourceRequest& request,
-                const SyncLoadCallback& callback) override;
+                SyncLoadCallback callback) override;
 
   static void CreateLoaderAndStart(ResourceRequesterInfo* requester_info,
                                    mojom::URLLoaderAssociatedRequest request,
@@ -43,7 +43,7 @@ class URLLoaderFactoryImpl final : public mojom::URLLoaderFactory {
                        int32_t routing_id,
                        int32_t request_id,
                        const ResourceRequest& request,
-                       const SyncLoadCallback& callback);
+                       SyncLoadCallback callback);
 
   // Creates a URLLoaderFactoryImpl instance. The instance is held by the
   // StrongBinding in it, so this function doesn't return the instance.