diff -r 000000000000 -r 6474c204b198 accessible/src/html/HTMLElementAccessibles.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/accessible/src/html/HTMLElementAccessibles.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,117 @@
+/* -*- 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/. */
+
+#include "HTMLElementAccessibles.h"
+
+#include "DocAccessible.h"
+#include "nsAccUtils.h"
+#include "nsIAccessibleRelation.h"
+#include "nsIPersistentProperties2.h"
+#include "nsTextEquivUtils.h"
+#include "Relation.h"
+#include "Role.h"
+#include "States.h"
+
+#include "mozilla/dom/HTMLLabelElement.h"
+
+using namespace mozilla::a11y;
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLHRAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+role
+HTMLHRAccessible::NativeRole()
+{
+  return roles::SEPARATOR;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLBRAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+role
+HTMLBRAccessible::NativeRole()
+{
+  return roles::WHITESPACE;
+}
+
+uint64_t
+HTMLBRAccessible::NativeState()
+{
+  return states::READONLY;
+}
+
+ENameValueFlag
+HTMLBRAccessible::NativeName(nsString& aName)
+{
+  aName = static_cast<char16_t>('\n');    // Newline char
+  return eNameOK;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLLabelAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+NS_IMPL_ISUPPORTS_INHERITED0(HTMLLabelAccessible, HyperTextAccessible)
+
+ENameValueFlag
+HTMLLabelAccessible::NativeName(nsString& aName)
+{
+  nsTextEquivUtils::GetNameFromSubtree(this, aName);
+  return aName.IsEmpty() ? eNameOK : eNameFromSubtree;
+}
+
+Relation
+HTMLLabelAccessible::RelationByType(RelationType aType)
+{
+  Relation rel = AccessibleWrap::RelationByType(aType);
+  if (aType == RelationType::LABEL_FOR) {
+    nsRefPtr<dom::HTMLLabelElement> label = dom::HTMLLabelElement::FromContent(mContent);
+    rel.AppendTarget(mDoc, label->GetControl());
+  }
+
+  return rel;
+}
+
+role
+HTMLLabelAccessible::NativeRole()
+{
+  return roles::LABEL;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// nsHTMLOuputAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+NS_IMPL_ISUPPORTS_INHERITED0(HTMLOutputAccessible, HyperTextAccessible)
+
+Relation
+HTMLOutputAccessible::RelationByType(RelationType aType)
+{
+  Relation rel = AccessibleWrap::RelationByType(aType);
+  if (aType == RelationType::CONTROLLED_BY)
+    rel.AppendIter(new IDRefsIterator(mDoc, mContent, nsGkAtoms::_for));
+
+  return rel;
+}
+
+role
+HTMLOutputAccessible::NativeRole()
+{
+  return roles::SECTION;
+}
+
+already_AddRefed<nsIPersistentProperties>
+HTMLOutputAccessible::NativeAttributes()
+{
+  nsCOMPtr<nsIPersistentProperties> attributes =
+    AccessibleWrap::NativeAttributes();
+  nsAccUtils::SetAccAttr(attributes, nsGkAtoms::live,
+                         NS_LITERAL_STRING("polite"));
+
+  return attributes.forget();
+}
+