1 files changed, 32 insertions, 0 deletions
diff --git a/layout/style/FontPreloader.cpp b/layout/style/FontPreloader.cpp
new file mode 100644
index 0000000000..564d6004da
--- /dev/null
+++ b/layout/style/FontPreloader.cpp
@@ -0,0 +1,32 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "FontPreloader.h"
+
+#include "mozilla/FontLoaderUtils.h"
+#include "gfxPlatform.h"
+
+namespace mozilla {
+
+FontPreloader::FontPreloader()
+    : FetchPreloader(nsIContentPolicy::TYPE_INTERNAL_FONT_PRELOAD) {}
+
+nsresult FontPreloader::CreateChannel(
+    nsIChannel** aChannel, nsIURI* aURI, const CORSMode aCORSMode,
+    const dom::ReferrerPolicy& aReferrerPolicy, dom::Document* aDocument,
+    nsILoadGroup* aLoadGroup, nsIInterfaceRequestor* aCallbacks,
+    uint64_t aEarlyHintPreloaderId, int32_t aSupportsPriorityValue) {
+  // Don't preload fonts if they've been preffed-off.
+  if (!gfxPlatform::GetPlatform()->DownloadableFontsEnabled()) {
+    return NS_ERROR_NOT_AVAILABLE;
+  }
+
+  return FontLoaderUtils::BuildChannel(
+      aChannel, aURI, aCORSMode, aReferrerPolicy, nullptr, nullptr, aDocument,
+      aLoadGroup, aCallbacks, true, aSupportsPriorityValue);
+}
+
+}  // namespace mozilla