diff -r 000000000000 -r 6474c204b198 parser/html/nsAHtml5TreeBuilderState.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/parser/html/nsAHtml5TreeBuilderState.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,50 @@
+/* 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 nsAHtml5TreeBuilderState_h
+#define nsAHtml5TreeBuilderState_h
+
+#include "nsIContentHandle.h"
+
+/**
+ * Interface for exposing the internal state of the HTML5 tree builder.
+ * For more documentation, please see
+ * http://hg.mozilla.org/projects/htmlparser/file/tip/src/nu/validator/htmlparser/impl/StateSnapshot.java
+ */
+class nsAHtml5TreeBuilderState {
+  public:
+  
+    virtual jArray<nsHtml5StackNode*,int32_t> getStack() = 0;
+    
+    virtual jArray<nsHtml5StackNode*,int32_t> getListOfActiveFormattingElements() = 0;
+
+    virtual jArray<int32_t,int32_t> getTemplateModeStack() = 0;
+
+    virtual int32_t getStackLength() = 0;
+
+    virtual int32_t getListOfActiveFormattingElementsLength() = 0;
+
+    virtual int32_t getTemplateModeStackLength() = 0;
+
+    virtual nsIContentHandle* getFormPointer() = 0;
+    
+    virtual nsIContentHandle* getHeadPointer() = 0;
+
+    virtual nsIContentHandle* getDeepTreeSurrogateParent() = 0;
+
+    virtual int32_t getMode() = 0;
+
+    virtual int32_t getOriginalMode() = 0;
+
+    virtual bool isFramesetOk() = 0;
+
+    virtual bool isNeedToDropLF() = 0;
+
+    virtual bool isQuirks() = 0;
+    
+    virtual ~nsAHtml5TreeBuilderState() {
+    }
+};
+
+#endif /* nsAHtml5TreeBuilderState_h */