[Resumption 9/11] Handle filename determination for resumed downloads.

chrome/browser/chromeos/drive/download_handler.cc

Index: chrome/browser/chromeos/drive/download_handler.cc
diff --git a/chrome/browser/chromeos/drive/download_handler.cc b/chrome/browser/chromeos/drive/download_handler.cc
index d97b69c3239c5147c4acc6b0f519be12488b62b3..386377c72da57abf4184e9e78c096296fb99bd8e 100644
--- a/chrome/browser/chromeos/drive/download_handler.cc
+++ b/chrome/browser/chromeos/drive/download_handler.cc
@@ -244,8 +244,13 @@ void DownloadHandler::OnDownloadUpdated(
       data->set_complete();
       break;
 
-    case DownloadItem::CANCELLED:
     case DownloadItem::INTERRUPTED:
+      // Interrupted downloads can be resumed. Keep the Drive user data around
+      // so that it can be used when the download resumes. The download is truly
+      // done when it's complete, is cancelled or is removed.
+      break;
+
+    case DownloadItem::CANCELLED:
       download->SetUserData(&kDrivePathKey, NULL);
       break;