diff -r 000000000000 -r 6474c204b198 parser/html/nsAHtml5TreeOpSink.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/parser/html/nsAHtml5TreeOpSink.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,24 @@
+/* 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 nsAHtml5TreeOpSink_h
+#define nsAHtml5TreeOpSink_h
+
+/**
+ * The purpose of this interface is to connect a tree op executor 
+ * (main-thread case), a tree op stage (non-speculative off-the-main-thread
+ * case) or a speculation (speculative case).
+ */
+class nsAHtml5TreeOpSink {
+  public:
+  
+    /**
+     * Flush the operations from the tree operations from the argument
+     * queue into this sink unconditionally.
+     */
+    virtual void MoveOpsFrom(nsTArray<nsHtml5TreeOperation>& aOpQueue) = 0;
+    
+};
+
+#endif /* nsAHtml5TreeOpSink_h */