diff -r 000000000000 -r 6474c204b198 content/canvas/src/WebGLExtensionBase.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/content/canvas/src/WebGLExtensionBase.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,31 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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/. */
+
+#include "WebGLContext.h"
+#include "WebGLExtensions.h"
+
+using namespace mozilla;
+
+WebGLExtensionBase::WebGLExtensionBase(WebGLContext* context)
+    : WebGLContextBoundObject(context)
+    , mIsLost(false)
+{
+    SetIsDOMBinding();
+}
+
+WebGLExtensionBase::~WebGLExtensionBase()
+{
+}
+
+void
+WebGLExtensionBase::MarkLost()
+{
+    mIsLost = true;
+}
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_0(WebGLExtensionBase)
+
+NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(WebGLExtensionBase, AddRef)
+NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(WebGLExtensionBase, Release)