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diff --git a/Source/WebCore/accessibility/AccessibilityAttachment.cpp b/Source/WebCore/accessibility/AccessibilityAttachment.cpp
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+++ b/Source/WebCore/accessibility/AccessibilityAttachment.cpp
@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2016 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ * 2.  Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "AccessibilityAttachment.h"
+
+#include "HTMLAttachmentElement.h"
+#include "HTMLNames.h"
+#include "LocalizedStrings.h"
+#include "RenderAttachment.h"
+
+#if ENABLE(ATTACHMENT_ELEMENT)
+
+namespace WebCore {
+    
+using namespace HTMLNames;
+
+AccessibilityAttachment::AccessibilityAttachment(RenderAttachment* renderer)
+    : AccessibilityRenderObject(renderer)
+{
+}
+
+Ref<AccessibilityAttachment> AccessibilityAttachment::create(RenderAttachment* renderer)
+{
+    return adoptRef(*new AccessibilityAttachment(renderer));
+}
+
+bool AccessibilityAttachment::hasProgress(float* progress) const
+{
+    auto& progressString = getAttribute(progressAttr);
+    bool validProgress;
+    float result = std::max<float>(std::min<float>(progressString.toFloat(&validProgress), 1), 0);
+    if (progress)
+        *progress = result;
+    return validProgress;
+}
+
+float AccessibilityAttachment::valueForRange() const
+{
+    float progress = 0;
+    hasProgress(&progress);
+    return progress;
+}
+    
+HTMLAttachmentElement* AccessibilityAttachment::attachmentElement() const
+{
+    ASSERT(is<HTMLAttachmentElement>(node()));
+    if (!is<HTMLAttachmentElement>(node()))
+        return nullptr;
+    
+    return downcast<HTMLAttachmentElement>(node());
+}
+    
+String AccessibilityAttachment::roleDescription() const
+{
+    return AXAttachmentRoleText();
+}
+
+bool AccessibilityAttachment::computeAccessibilityIsIgnored() const
+{
+    return false;
+}
+    
+void AccessibilityAttachment::accessibilityText(Vector<AccessibilityText>& textOrder)
+{
+    HTMLAttachmentElement* attachmentElement = this->attachmentElement();
+    if (!attachmentElement)
+        return;
+    
+    auto title = attachmentElement->attachmentTitle();
+    auto& subtitle = getAttribute(subtitleAttr);
+    auto& action = getAttribute(actionAttr);
+    
+    if (action.length())
+        textOrder.append(AccessibilityText(action, ActionText));
+
+    if (title.length())
+        textOrder.append(AccessibilityText(title, TitleText));
+
+    if (subtitle.length())
+        textOrder.append(AccessibilityText(subtitle, SubtitleText));
+}
+
+} // namespace WebCore
+
+#endif // ENABLE(ATTACHMENT_ELEMENT)
+