[BlobAsync] Disk support for blob storage

storage/browser/blob/blob_async_transport_request_builder.h

Index: storage/browser/blob/blob_async_transport_request_builder.h
diff --git a/storage/browser/blob/blob_async_transport_request_builder.h b/storage/browser/blob/blob_async_transport_request_builder.h
index 10dde5ff6ffad01b1314cd105c285bc88a956874..30dcb3709e9df8148d18108bcfe5a1a8b257d869 100644
--- a/storage/browser/blob/blob_async_transport_request_builder.h
+++ b/storage/browser/blob/blob_async_transport_request_builder.h
@@ -117,6 +117,11 @@ class STORAGE_EXPORT BlobAsyncTransportRequestBuilder {
   static bool ShouldBeShortcut(const std::vector<DataElement>& items,
                                size_t memory_available);
 
+ protected:
+  std::vector<RendererMemoryItemRequest>* mutable_requests() {
+    return &requests_;
+  }
+
  private:
   static void ComputeHandleSizes(uint64_t total_memory_size,
                                  size_t max_segment_size,