Set the Content-Type and Content-Length headers for BG Fetch

content/browser/background_fetch/background_fetch_data_manager.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/background_fetch/background_fetch_data_manager.h"
 
 #include <algorithm>
 #include <queue>
 
 #include "base/memory/ptr_util.h"
@@ skipping 189 matching lines @@
   std::vector<BackgroundFetchSettledFetch> settled_fetches;
   settled_fetches.reserve(requests.size());
 
   std::vector<std::unique_ptr<BlobHandle>> blob_handles;
 
   for (const auto& request : requests) {
     BackgroundFetchSettledFetch settled_fetch;
     settled_fetch.request = request->fetch_request();
 
     settled_fetch.response.url_list = request->GetURLChain();
-    // TODO: settled_fetch.response.status_code
+
+    // TODO(peter): The |status_code| should match what the download manager ran
+    // in to in the BackgroundFetchResponseInfo.
+    settled_fetch.response.status_code = 200;
     // TODO: settled_fetch.response.status_text
+
     settled_fetch.response.response_type =
         blink::WebServiceWorkerResponseTypeDefault;
-    // TODO: settled_fetch.response.headers
+
+    // TODO(peter): The |headers| should be set to the real response headers,
+    // but the download manager does not relay those to us yet.
+    if (!request->GetResponseType().empty()) {
+      settled_fetch.response.headers["Content-Type"] =
+          request->GetResponseType();
+    }
 
     if (request->GetFileSize() > 0) {
       DCHECK(!request->GetFilePath().empty());
 
       std::unique_ptr<BlobHandle> blob_handle =
           blob_storage_context_->CreateFileBackedBlob(
               request->GetFilePath(), 0 /* offset */, request->GetFileSize(),
               base::Time() /* expected_modification_time */);
 
       // TODO(peter): Appropriately handle !blob_handle
       if (blob_handle) {
         settled_fetch.response.blob_uuid = blob_handle->GetUUID();
         settled_fetch.response.blob_size = request->GetFileSize();
 
+        // TODO(peter): Remove when we relay the real response headers.
+        settled_fetch.response.headers["Content-Length"] =
+            std::to_string(request->GetFileSize());
+
         blob_handles.push_back(std::move(blob_handle));
       }
     }
 
     // TODO: settled_fetch.response.error
     settled_fetch.response.response_time = request->GetResponseTime();
     // TODO: settled_fetch.response.cors_exposed_header_names
 
     settled_fetches.push_back(settled_fetch);
   }
@@ skipping 10 matching lines @@
     std::move(callback).Run(blink::mojom::BackgroundFetchError::INVALID_TAG);
     return;
   }
 
   registrations_.erase(iter);
 
   std::move(callback).Run(blink::mojom::BackgroundFetchError::NONE);
 }
 
 }  // namespace content