third_party/WebKit/Source/modules/offscreencanvas/OffscreenCanvasModules.idl

// Copyright 2016 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.

typedef (OffscreenCanvasRenderingContext2D or
         WebGLRenderingContext or
         WebGL2RenderingContext) OffscreenRenderingContext;

partial interface OffscreenCanvas {
    [CallWith=ScriptState, RaisesException, RuntimeEnabled=ExperimentalCanvasFeatures] OffscreenRenderingContext? getContext(DOMString contextId, optional CanvasContextCreationAttributes attributes);
};