diff -r 000000000000 -r 6474c204b198 accessible/src/base/nsEventShell.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/accessible/src/base/nsEventShell.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,67 @@
+/* -*- 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 "nsEventShell.h"
+
+#include "nsAccUtils.h"
+
+#include "mozilla/StaticPtr.h"
+
+using namespace mozilla;
+using namespace mozilla::a11y;
+
+////////////////////////////////////////////////////////////////////////////////
+// nsEventShell
+////////////////////////////////////////////////////////////////////////////////
+
+void
+nsEventShell::FireEvent(AccEvent* aEvent)
+{
+  if (!aEvent)
+    return;
+
+  Accessible* accessible = aEvent->GetAccessible();
+  NS_ENSURE_TRUE_VOID(accessible);
+
+  nsINode* node = accessible->GetNode();
+  if (node) {
+    sEventTargetNode = node;
+    sEventFromUserInput = aEvent->IsFromUserInput();
+  }
+
+  accessible->HandleAccEvent(aEvent);
+
+  sEventTargetNode = nullptr;
+}
+
+void
+nsEventShell::FireEvent(uint32_t aEventType, Accessible* aAccessible,
+                        EIsFromUserInput aIsFromUserInput)
+{
+  NS_ENSURE_TRUE_VOID(aAccessible);
+
+  nsRefPtr<AccEvent> event = new AccEvent(aEventType, aAccessible,
+                                          aIsFromUserInput);
+
+  FireEvent(event);
+}
+
+void 
+nsEventShell::GetEventAttributes(nsINode *aNode,
+                                 nsIPersistentProperties *aAttributes)
+{
+  if (aNode != sEventTargetNode)
+    return;
+
+  nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::eventFromInput,
+                         sEventFromUserInput ? NS_LITERAL_STRING("true") :
+                                               NS_LITERAL_STRING("false"));
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// nsEventShell: private
+
+bool nsEventShell::sEventFromUserInput = false;
+StaticRefPtr<nsINode> nsEventShell::sEventTargetNode;