interrupt and resume download with CONTENT_LENGTH_MISMATCH errors

content/browser/download/download_item_impl.h

Index: content/browser/download/download_item_impl.h
diff --git a/content/browser/download/download_item_impl.h b/content/browser/download/download_item_impl.h
index 4a6e31919f3ed0e0db75ccf0bb60c3dec74a9fc4..90dda1d3d38b68645513add228c437fddd281c36 100644
--- a/content/browser/download/download_item_impl.h
+++ b/content/browser/download/download_item_impl.h
@@ -713,6 +713,10 @@ class CONTENT_EXPORT DownloadItemImpl
 
   std::unique_ptr<DownloadJob> job_;
 
+  // Value of |received_bytes_| at the time the download was interrupted with
+  // CONTENT_LENGTH_MISMATCH.
+  int64_t received_bytes_at_length_mismatch = -1;
+
   base::WeakPtrFactory<DownloadItemImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadItemImpl);