Index: content/browser/loader/upload_data_stream_builder.cc |
diff --git a/content/browser/loader/upload_data_stream_builder.cc b/content/browser/loader/upload_data_stream_builder.cc |
index 6419ead79631a1d9ccb3919f671be5200a5f9c5a..376e221d2a6e2ebd8b7f26247ecb6a9b57697a12 100644 |
--- a/content/browser/loader/upload_data_stream_builder.cc |
+++ b/content/browser/loader/upload_data_stream_builder.cc |
@@ -115,6 +115,9 @@ scoped_ptr<net::UploadDataStream> UploadDataStreamBuilder::Build( |
new FileElementReader(body, file_task_runner, element)); |
break; |
case ResourceRequestBody::Element::TYPE_FILE_FILESYSTEM: |
+ // If |body| contains any filesystem URLs, the caller should have |
+ // supplied a FileSystemContext. |
+ DCHECK(file_system_context); |
element_readers.push_back( |
new content::UploadFileSystemFileElementReader( |
file_system_context, |