File: render_frame_test_helper.mojom

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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

module content.mojom;

import "third_party/blink/public/mojom/tokens/tokens.mojom";

// Helper to facilitate testing of renderer-side state in content_browsertests.
interface RenderFrameTestHelper {
  // Get the DocumentToken for the RenderFrame's active document. A RenderFrame
  // can be reused for a cross-document navigation; after the navigation, the
  // newly-committed document is considered the active document.
  GetDocumentToken() => (blink.mojom.DocumentToken token);

  // Get the CanvasNoiseToken used for the RenderFrame's active document.
  // The CanvasNoiseToken should remain constant for the frame's content::Page,
  // unless the page is reused for a cross-document navigation.
  GetCanvasNoiseToken() => (uint64? canvas_noise_token);
};