import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/tests/mochitest/dom-level2-core/files/xhtml1-strict.dtd

@@ -0,0 +1,65 @@
+<!--
+
+Copyright (c) 2001-2004 World Wide Web Consortium, 
+(Massachusetts Institute of Technology, Institut National de
+Recherche en Informatique et en Automatique, Keio University).  All 
+Rights Reserved.  This program is distributed under the W3C's Software
+Intellectual Property License.  This program is distributed in the 
+hope that it will be useful, but WITHOUT ANY WARRANTY; without even
+the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
+PURPOSE.  
+
+See W3C License http://www.w3.org/Consortium/Legal/ for more details.
+
+-->
+
+<!--
+
+This is a radically simplified DTD for use in the DOM Test Suites
+due to a XML non-conformance of one implementation in processing
+parameter entities.  When that non-conformance is resolved,
+this DTD can be replaced by the normal DTD for XHTML.
+
+-->
+
+
+<!ELEMENT html (head, body)>
+<!ATTLIST html xmlns CDATA #IMPLIED>
+<!ELEMENT head (meta,title,script*)>
+<!ELEMENT meta EMPTY>
+<!ATTLIST meta 
+	http-equiv CDATA #IMPLIED
+	content CDATA #IMPLIED>
+<!ELEMENT title (#PCDATA)>
+<!ELEMENT body (p*)>
+<!ATTLIST body onload CDATA #IMPLIED>
+<!ELEMENT p (#PCDATA|em|strong|code|sup|var|acronym|abbr)*>
+<!ATTLIST p 
+  xmlns:dmstc CDATA #IMPLIED
+  xmlns:nm CDATA #IMPLIED
+  xmlns:emp2 CDATA #IMPLIED
+  id ID #IMPLIED  
+>
+<!ELEMENT em (#PCDATA)>
+<!ELEMENT span (#PCDATA)>
+<!ELEMENT strong (#PCDATA)>
+<!ELEMENT code (#PCDATA)>
+<!ELEMENT sup (#PCDATA)>
+<!ELEMENT var (#PCDATA|span)*>
+<!ELEMENT acronym (#PCDATA)>
+<!ATTLIST acronym
+    title CDATA #IMPLIED
+    class CDATA #IMPLIED
+    id ID #IMPLIED
+>
+<!ELEMENT abbr (#PCDATA)>
+<!ATTLIST abbr
+    title CDATA #IMPLIED
+    class CDATA #IMPLIED
+    id ID #IMPLIED
+>
+<!ELEMENT script (#PCDATA)>
+<!ATTLIST script 
+   type CDATA #IMPLIED
+   src CDATA #IMPLIED
+   charset CDATA #IMPLIED>