diff -r 000000000000 -r 6474c204b198 parser/html/nsHtml5UTF16BufferCppSupplement.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/parser/html/nsHtml5UTF16BufferCppSupplement.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,36 @@
+/* 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/. */
+
+nsHtml5UTF16Buffer::nsHtml5UTF16Buffer(char16_t* aBuffer, int32_t aEnd)
+  : buffer(aBuffer)
+  , start(0)
+  , end(aEnd)
+{
+  MOZ_COUNT_CTOR(nsHtml5UTF16Buffer);
+}
+
+nsHtml5UTF16Buffer::~nsHtml5UTF16Buffer()
+{
+  MOZ_COUNT_DTOR(nsHtml5UTF16Buffer);
+}
+
+void
+nsHtml5UTF16Buffer::DeleteBuffer()
+{
+  delete[] buffer;
+}
+
+void
+nsHtml5UTF16Buffer::Swap(nsHtml5UTF16Buffer* aOther)
+{
+  char16_t* tempBuffer = buffer;
+  int32_t tempStart = start;
+  int32_t tempEnd = end;
+  buffer = aOther->buffer;
+  start = aOther->start;
+  end = aOther->end;
+  aOther->buffer = tempBuffer;
+  aOther->start = tempStart;
+  aOther->end = tempEnd;
+}