Use previous target path when resuming a download after crash

content/public/browser/download_item.h

Index: content/public/browser/download_item.h
diff --git a/content/public/browser/download_item.h b/content/public/browser/download_item.h
index 32963bfd476415a5b22a75857900d68b462c7527..c6049115528163a58ca591f48de922bd564114b9 100644
--- a/content/public/browser/download_item.h
+++ b/content/public/browser/download_item.h
@@ -282,6 +282,12 @@ class CONTENT_EXPORT DownloadItem : public base::SupportsUserData {
   // return the path requested.
   virtual const base::FilePath& GetForcedFilePath() const = 0;
 
+  // Get the target path that was used most recently. It could be either the
+  // forced file path, or the target file path, if any one of them is provided.
+  virtual base::FilePath GetLastUsedTargetPath() const {

[asanka, 2017/01/10 19:34:19]

= 0. But then again we shouldn't have this method at all.

[qinmin, 2017/01/10 22:06:29]

Done.

+    return base::FilePath();
+  }
+
   // Returns the file-name that should be reported to the user. If a display
   // name has been explicitly set using SetDisplayName(), this function returns
   // that display name. Otherwise returns the final target filename.