MD Downloads: check for removed files on page load

chrome/browser/ui/webui/md_downloads/md_downloads_dom_handler.h

Index: chrome/browser/ui/webui/md_downloads/md_downloads_dom_handler.h
diff --git a/chrome/browser/ui/webui/md_downloads/md_downloads_dom_handler.h b/chrome/browser/ui/webui/md_downloads/md_downloads_dom_handler.h
index 02577e8be05f3929553cc44f0fc72a4d6ab4ee83..76fc88bfa8cb2d3670ffae5d3709ea7248cd6108 100644
--- a/chrome/browser/ui/webui/md_downloads/md_downloads_dom_handler.h
+++ b/chrome/browser/ui/webui/md_downloads/md_downloads_dom_handler.h
@@ -130,6 +130,9 @@ class MdDownloadsDOMHandler : public content::WebUIMessageHandler {
   // Remove all downloads in |to_remove| with the ability to undo removal later.
   void RemoveDownloads(const DownloadVector& to_remove);
 
+  // Checks whether a download's file was removed from its original location.
+  void CheckForRemovedFiles();
+
   DownloadsListTracker list_tracker_;
 
   // IDs of downloads to remove when this handler gets deleted.