Add the picture element

Source/core/html/HTMLPictureElement.cpp

Index: Source/core/html/HTMLPictureElement.cpp
diff --git a/Source/core/html/HTMLPictureElement.cpp b/Source/core/html/HTMLPictureElement.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..ebf7f21b17f1de6f7cc42e7511cd7748b940da41
--- /dev/null
+++ b/Source/core/html/HTMLPictureElement.cpp
@@ -0,0 +1,25 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "config.h"
+#include "core/html/HTMLPictureElement.h"
+
+#include "HTMLNames.h"
+
+namespace WebCore {
+
+using namespace HTMLNames;
+
+HTMLPictureElement::HTMLPictureElement(Document& document)
+    : HTMLElement(pictureTag, document)
+{
+    ScriptWrappable::init(this);
+}
+
+PassRefPtr<HTMLPictureElement> HTMLPictureElement::create(Document& document)
+{
+    return adoptRef(new HTMLPictureElement(document));
+}
+
+} // namespace