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-rw-r--r--dom/canvas/WebGLContextUnchecked.h35
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diff --git a/dom/canvas/WebGLContextUnchecked.h b/dom/canvas/WebGLContextUnchecked.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* vim: set ts=8 sts=4 et sw=4 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/. */
+
+#ifndef WEBGLCONTEXTUNCHECKED_H
+#define WEBGLCONTEXTUNCHECKED_H
+
+#include "mozilla/RefPtr.h"
+#include "WebGLTypes.h"
+
+namespace mozilla {
+
+class WebGLBuffer;
+class WebGLSampler;
+
+class WebGLContextUnchecked
+{
+public:
+ explicit WebGLContextUnchecked(gl::GLContext* gl);
+
+protected:
+ // We've had issues in the past with nulling `gl` without actually releasing
+ // all of our resources. This construction ensures that we are aware that we
+ // should only null `gl` in DestroyResourcesAndContext.
+ RefPtr<gl::GLContext> mGL_OnlyClearInDestroyResourcesAndContext;
+public:
+ // Grab a const reference so we can see changes, but can't make changes.
+ const decltype(mGL_OnlyClearInDestroyResourcesAndContext)& gl;
+};
+
+} // namespace mozilla
+
+#endif // !WEBGLCONTEXTUNCHECKED_H