1 files changed, 35 insertions, 0 deletions
diff --git a/dom/canvas/WebGLContextUnchecked.h b/dom/canvas/WebGLContextUnchecked.h
new file mode 100644
index 000000000..eb5736f15
--- /dev/null
+++ b/dom/canvas/WebGLContextUnchecked.h
@@ -0,0 +1,35 @@
+/* -*- 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