Backing out the patch fro bug 353560 due to bug 356178.

toolkit/mozapps/downloads/src/nsHelperAppDlg.js.in

@@ -885,12 +885,7 @@ nsUnknownContentTypeDialog.prototype = {
 
           this.mLauncher.saveToDisk(targetFile, false);
 #endif
-          // Since saveToDisk may open a file picker and therefore block this routine,
-          // we should only call it once the dialog is closed.
-          var _delayedSaveToDisk = function(aSelf) {
-            aSelf.mLauncher.saveToDisk(null, false);
-          }
-          this.mDialog.setTimeout(_delayedSaveToDisk, 0, this);
+          this.mLauncher.saveToDisk(null, false);
         }
         else
           this.mLauncher.launchWithApplication(null, false);