request for pdf resource from the webui

atom/browser/loader/layered_resource_handler.cc

@@ -0,0 +1,26 @@
+// Copyright (c) 2017 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/browser/loader/layered_resource_handler.h"
+
+namespace atom {
+
+LayeredResourceHandler::LayeredResourceHandler(
+    net::URLRequest* request,
+    std::unique_ptr<content::ResourceHandler> next_handler,
+    Delegate* delegate)
+    : content::LayeredResourceHandler(request, std::move(next_handler)),
+      delegate_(delegate) {}
+
+LayeredResourceHandler::~LayeredResourceHandler() {}
+
+bool LayeredResourceHandler::OnResponseStarted(
+    content::ResourceResponse* response,
+    bool* defer) {
+  if (delegate_)
+    delegate_->OnResponseStarted(response);
+  return next_handler_->OnResponseStarted(response, defer);
+}
+
+}  // namespace atom