[Merge to 49] [Downloads] Avoid resetting SecureHash state across an interruption.

content/browser/download/base_file.cc

Index: content/browser/download/base_file.cc
diff --git a/content/browser/download/base_file.cc b/content/browser/download/base_file.cc
index 7bd2b0bcabf5526705630ec445ce6b819a80228a..8fda8de6a5c48834ab579aabaceedf5c79055e9f 100644
--- a/content/browser/download/base_file.cc
+++ b/content/browser/download/base_file.cc
@@ -203,7 +203,11 @@ void BaseFile::Finish() {
 
   if (calculate_hash_)
     secure_hash_->Finish(sha256_hash_, crypto::kSHA256Length);
+  Close();
+}
 
+void BaseFile::FinishWithError() {
+  DCHECK_CURRENTLY_ON(BrowserThread::FILE);
   Close();
 }