Failure in reading Blob URL should results in network error

content/browser/blob_storage/blob_url_loader_factory.cc

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/blob_storage/blob_url_loader_factory.h"
 
 #include <stddef.h>
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/macros.h"
@@ skipping 118 matching lines @@
   // mojom::URLLoader implementation:
   void FollowRedirect() override { NOTREACHED(); }
 
   void SetPriority(net::RequestPriority priority,
                    int32_t intra_priority_value) override {}
 
   // Notifies the client that the request completed. Takes care of deleting this
   // object now if possible (i.e. no outstanding data pipe), otherwise this
   // object will be deleted when the data pipe is closed.
   void NotifyCompleted(int error_code) {
-    if (error_code != net::OK && !sent_headers_) {
-      net::HttpStatusCode status_code =
-          storage::BlobURLRequestJob::NetErrorToHttpStatusCode(error_code);
-      ResourceResponseHead response;
-      response.headers = storage::BlobURLRequestJob::GenerateHeaders(
-          status_code, nullptr, nullptr, nullptr, nullptr);
-      client_->OnReceiveResponse(response, base::nullopt, nullptr);
-    }
     ResourceRequestCompletionStatus request_complete_data;
+    request_complete_data.error_code = error_code;
     client_->OnComplete(request_complete_data);
 
     DeleteIfNeeded();
   }
 
   void DidCalculateSize(int result) {
     if (result != net::OK) {
       NotifyCompleted(result);
       return;
     }
@@ skipping 235 matching lines @@
 }
 
 void BlobURLLoaderFactory::SyncLoad(int32_t routing_id,
                                     int32_t request_id,
                                     const ResourceRequest& request,
                                     SyncLoadCallback callback) {
   NOTREACHED();
 }
 
 }  // namespace content