Bug 799937 - Make createElement()'s result always in the HTML namespace (except for XUL documents); r=bz

The new expected failures in web-platform are in a test that doesn't
match the spec, which has already been synced upstream and will be
synced shortly.  For the same test in imptests, I chose to modify the
test instead, because it's easier and imptests is going to be removed.

dom/base/nsDocument.cpp

@@ -1550,6 +1550,8 @@ nsDocument::nsDocument(const char* aContentType)
   , mAnimatingImages(true)
   , mViewportType(Unknown)
 {
+  mDefaultElementType = kNameSpaceID_XHTML;
+
   SetContentTypeInternal(nsDependentCString(aContentType));
 
   if (!gDocumentLeakPRLog)

dom/base/test/test_XHRSendData.html

@@ -34,7 +34,7 @@ is(testDoc1.inputEncoding, "windows-1252", "wrong encoding");
 
 testDoc2 = document.implementation.createDocument("", "", null);
 testDoc2.appendChild(testDoc2.createComment(" doc 2 "));
-testDoc2.appendChild(testDoc2.createElement("res"));
+testDoc2.appendChild(testDoc2.createElementNS(null, "res"));
 testDoc2.documentElement.appendChild(testDoc2.createTextNode("text"));
 is(testDoc2.inputEncoding, "UTF-8", "wrong encoding");
 

dom/base/test/unit/test_xml_serializer.js

@@ -175,7 +175,7 @@ function test5() {
   // Handling of kids in the null namespace when the default is a
   // different namespace (bug 301260).
   var doc = ParseXML('<root xmlns="ns1"/>')
-  var child = doc.createElement('child');
+  var child = doc.createElementNS(null, 'child');
   doc.documentElement.appendChild(child);
   do_check_serialize(doc);
   do_check_eq(SerializeXML(doc),

dom/html/nsHTMLDocument.cpp

@@ -176,7 +176,6 @@ nsHTMLDocument::nsHTMLDocument()
   // bother initializing members to 0.
 
   mType = eHTML;
-  mDefaultElementType = kNameSpaceID_XHTML;
   mCompatMode = eCompatibility_NavQuirks;
 }
 

dom/imptests/failures/html/dom/nodes/test_Node-properties.html.json

@@ -1,7 +1,5 @@
 {
   "document.characterSet": true,
   "foreignDoc.characterSet": true,
-  "xmlDoc.characterSet": true,
-  "xmlElement.namespaceURI": true,
-  "detachedXmlElement.namespaceURI": true
+  "xmlDoc.characterSet": true
 }

dom/imptests/html/dom/nodes/test_Document-createElement-namespace.html

@@ -24,11 +24,7 @@ function testDoc(doc, contentType) {
                   "Wrong MIME type -- incorrect server config?");
   }
 
-  var expectedNamespace = contentType == "text/html" ||
-                          contentType == "application/xhtml+xml"
-                          ? "http://www.w3.org/1999/xhtml" : null;
-
-  assert_equals(doc.createElement("x").namespaceURI, expectedNamespace);
+  assert_equals(doc.createElement("x").namespaceURI, "http://www.w3.org/1999/xhtml");
 }
 
 // First test various objects we create in JS

testing/web-platform/meta/custom-elements/creating-and-passing-registries/share-registry-create-document.html.ini

@@ -1,5 +0,0 @@
-[share-registry-create-document.html]
-  type: testharness
-  [Document created by createDocument with HTML namespace should share an existing registry]
-    expected: FAIL
-

testing/web-platform/meta/dom/nodes/Document-constructor.html.ini

@@ -1,5 +0,0 @@
-[Document-constructor.html]
-  type: testharness
-  [new Document(): URL parsing]
-    expected: FAIL
-

testing/web-platform/meta/dom/nodes/Document-createElement-namespace.html.ini

@@ -0,0 +1,74 @@
+[Document-createElement-namespace.html]
+  type: testharness
+  [Created element's namespace in created XML document]
+    expected: FAIL
+
+  [Created element's namespace in created XHTML document]
+    expected: FAIL
+
+  [Created element's namespace in created SVG document]
+    expected: FAIL
+
+  [Created element's namespace in created MathML document]
+    expected: FAIL
+
+  [Created element's namespace in empty.xml]
+    expected: FAIL
+
+  [Created element's namespace in empty.svg]
+    expected: FAIL
+
+  [Created element's namespace in minimal_html.xml]
+    expected: FAIL
+
+  [Created element's namespace in minimal_html.svg]
+    expected: FAIL
+
+  [Created element's namespace in xhtml.xml]
+    expected: FAIL
+
+  [Created element's namespace in xhtml.svg]
+    expected: FAIL
+
+  [Created element's namespace in svg.xml]
+    expected: FAIL
+
+  [Created element's namespace in svg.svg]
+    expected: FAIL
+
+  [Created element's namespace in mathml.xml]
+    expected: FAIL
+
+  [Created element's namespace in mathml.svg]
+    expected: FAIL
+
+  [Created element's namespace in bare_xhtml.xml]
+    expected: FAIL
+
+  [Created element's namespace in bare_xhtml.svg]
+    expected: FAIL
+
+  [Created element's namespace in bare_svg.xml]
+    expected: FAIL
+
+  [Created element's namespace in bare_svg.svg]
+    expected: FAIL
+
+  [Created element's namespace in bare_mathml.xml]
+    expected: FAIL
+
+  [Created element's namespace in bare_mathml.svg]
+    expected: FAIL
+
+  [Created element's namespace in xhtml_ns_removed.xml]
+    expected: FAIL
+
+  [Created element's namespace in xhtml_ns_removed.svg]
+    expected: FAIL
+
+  [Created element's namespace in xhtml_ns_changed.xml]
+    expected: FAIL
+
+  [Created element's namespace in xhtml_ns_changed.svg]
+    expected: FAIL
+

testing/web-platform/meta/dom/nodes/Node-properties.html.ini

@@ -1,8 +0,0 @@
-[Node-properties.html]
-  type: testharness
-  [xmlElement.namespaceURI]
-    expected: FAIL
-
-  [detachedXmlElement.namespaceURI]
-    expected: FAIL
-