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diff --git a/chromium/components/prerender/common/prerender_canceler.mojom b/chromium/components/prerender/common/prerender_canceler.mojom
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+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+module prerender.mojom;
+
+import "url/mojom/url.mojom";
+
+// This interface is provided to a renderer that is used for prerendering. It
+// enables the renderer to detect and respond to cases that should cause the
+// prerendering to be cancelled.
+interface PrerenderCanceler {
+ // Cancels prerendering because of an unsupported scheme.
+ CancelPrerenderForUnsupportedScheme(url.mojom.Url url);
+};