Bug 722868 - Part 2: Make the download manager aware of the deleteTemporaryPrivateFileWhenPossible API; r=gavin

toolkit/components/downloads/nsDownloadManager.cpp

@@ -2879,9 +2879,14 @@ nsDownload::OpenWithApplication()
 
     // Even if we are unable to get this service we return the result
     // of LaunchWithFile() which makes more sense.
-    if (appLauncher)
+    if (appLauncher) {
+      if (nsDownloadManager::gDownloadManagerService->mInPrivateBrowsing) {
+        (void)appLauncher->DeleteTemporaryPrivateFileWhenPossible(target);
+      } else {
         (void)appLauncher->DeleteTemporaryFileOnExit(target);
       }
+    }
+  }
 
   return retVal;
 }