Implement CachedMetadata handling on MojoAsyncResourceHandler

content/browser/service_worker/service_worker_fetch_dispatcher.cc

Index: content/browser/service_worker/service_worker_fetch_dispatcher.cc
diff --git a/content/browser/service_worker/service_worker_fetch_dispatcher.cc b/content/browser/service_worker/service_worker_fetch_dispatcher.cc
index c71cfb4e045e62bb44e1fa759da184b5ad98a024..67b0c097f438af431fad55ad4f98dfc1cc0729aa 100644
--- a/content/browser/service_worker/service_worker_fetch_dispatcher.cc
+++ b/content/browser/service_worker/service_worker_fetch_dispatcher.cc
@@ -82,6 +82,9 @@ class DelegatingURLLoaderClient final : public mojom::URLLoaderClient {
   void OnDataDownloaded(int64_t data_length, int64_t encoded_length) override {
     client_->OnDataDownloaded(data_length, encoded_length);
   }
+  void OnReceiveCachedMetadata(const std::vector<uint8_t>& data) override {
+    client_->OnReceiveCachedMetadata(data);
+  }
   void OnTransferSizeUpdated(int32_t transfer_size_diff) override {
     client_->OnTransferSizeUpdated(transfer_size_diff);
   }