diff -r 000000000000 -r 6474c204b198 content/base/public/nsIContentSerializer.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/content/base/public/nsIContentSerializer.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,75 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 nsIContentSerializer_h
+#define nsIContentSerializer_h
+
+#include "nsISupports.h"
+
+class nsIContent;
+class nsIDocument;
+class nsAString;
+
+namespace mozilla {
+namespace dom {
+class Element;
+} // namespace dom
+} // namespace mozilla
+
+#define NS_ICONTENTSERIALIZER_IID \
+{ 0xb1ee32f2, 0xb8c4, 0x49b9, \
+  { 0x93, 0xdf, 0xb6, 0xfa, 0xb5, 0xd5, 0x46, 0x88 } }
+
+class nsIContentSerializer : public nsISupports {
+ public: 
+
+  NS_DECLARE_STATIC_IID_ACCESSOR(NS_ICONTENTSERIALIZER_IID)
+
+  NS_IMETHOD Init(uint32_t flags, uint32_t aWrapColumn,
+                  const char* aCharSet, bool aIsCopying,
+                  bool aIsWholeDocument) = 0;
+
+  NS_IMETHOD AppendText(nsIContent* aText, int32_t aStartOffset,
+                        int32_t aEndOffset, nsAString& aStr) = 0;
+
+  NS_IMETHOD AppendCDATASection(nsIContent* aCDATASection,
+                                int32_t aStartOffset, int32_t aEndOffset,
+                                nsAString& aStr) = 0;
+
+  NS_IMETHOD AppendProcessingInstruction(nsIContent* aPI,
+                                         int32_t aStartOffset,
+                                         int32_t aEndOffset,
+                                         nsAString& aStr) = 0;
+
+  NS_IMETHOD AppendComment(nsIContent* aComment, int32_t aStartOffset,
+                           int32_t aEndOffset, nsAString& aStr) = 0;
+
+  NS_IMETHOD AppendDoctype(nsIContent *aDoctype,
+                           nsAString& aStr) = 0;
+
+  NS_IMETHOD AppendElementStart(mozilla::dom::Element* aElement,
+                                mozilla::dom::Element* aOriginalElement,
+                                nsAString& aStr) = 0;
+
+  NS_IMETHOD AppendElementEnd(mozilla::dom::Element* aElement,
+                              nsAString& aStr) = 0;
+
+  NS_IMETHOD Flush(nsAString& aStr) = 0;
+
+  /**
+   * Append any items in the beginning of the document that won't be 
+   * serialized by other methods. XML declaration is the most likely 
+   * thing this method can produce.
+   */
+  NS_IMETHOD AppendDocumentStart(nsIDocument *aDocument,
+                                 nsAString& aStr) = 0;
+};
+
+NS_DEFINE_STATIC_IID_ACCESSOR(nsIContentSerializer, NS_ICONTENTSERIALIZER_IID)
+
+#define NS_CONTENTSERIALIZER_CONTRACTID_PREFIX \
+"@mozilla.org/layout/contentserializer;1?mimetype="
+
+#endif /* nsIContentSerializer_h */