Pepper: Always call status_cb in FileDownloader.

components/nacl/renderer/file_downloader.cc

Index: components/nacl/renderer/file_downloader.cc
diff --git a/components/nacl/renderer/file_downloader.cc b/components/nacl/renderer/file_downloader.cc
index d6dd27063378f4b257215066747da1d023d9ca76..b2771f25db4e276a1d4f0b2c14a7fedee80e76db 100644
--- a/components/nacl/renderer/file_downloader.cc
+++ b/components/nacl/renderer/file_downloader.cc
@@ -93,6 +93,13 @@ void FileDownloader::didFail(
     // It's a WebKit error.
     status_ = ACCESS_DENIED;
   }
+
+  // Delete url_loader to prevent didFinishLoading from being called, which
+  // some implementations of blink::WebURLLoader will do after calling didFail.
+  url_loader_.reset();
+
+  status_cb_.Run(status_, file_.Pass(), http_status_code_);
+  delete this;
 }
 
 }  // namespace nacl