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

chrome/browser/download/download_target_determiner_delegate.h

Index: chrome/browser/download/download_target_determiner_delegate.h
diff --git a/chrome/browser/download/download_target_determiner_delegate.h b/chrome/browser/download/download_target_determiner_delegate.h
index b303afe44d066ec4724da3a8dcdd28a962c533bb..68271ffc51a2d70e4a311162d2ad5ee736e9612a 100644
--- a/chrome/browser/download/download_target_determiner_delegate.h
+++ b/chrome/browser/download/download_target_determiner_delegate.h
@@ -72,8 +72,14 @@ class DownloadTargetDeterminerDelegate {
   // Reserve |virtual_path|. This is expected to check the following:
   // - Whether |virtual_path| can be written to by the user. If not, the
   //   |virtual_path| can be changed to writeable path if necessary.
-  // - If |conflict_action| is UNIQUIFY then |virtual_path| should be modified
-  //   so that the new path is writeable and unique.
+  // - If |conflict_action| is UNIQUIFY then |virtual_path| should be
+  //   modified so that the new path is writeable and unique. If
+  //   |conflict_action| is PROMPT, then in the event of a conflict,
+  //   |callback| should be invoked with |success| set to |false| in
+  //   order to force a prompt. |virtual_path| may or may not be
+  //   modified in the latter case.
+  // - If |create_directory| is true, then the parent directory of
+  //   |virtual_path| should be created if it doesn't exist.
   //
   // |callback| should be invoked on completion with the results.
   virtual void ReserveVirtualPath(