Add the picture element

Add the DOM part of the picture element, without actually using it for anything useful just yet.

BUG=368830

Review URL: https://codereview.chromium.org/261823002

git-svn-id: svn://svn.chromium.org/blink/trunk@173575 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/LayoutTests/webexposed/global-constructors-listing-expected.txt

@@ -153,6 +153,7 @@ HTMLOptionsCollection
 HTMLOutputElement
 HTMLParagraphElement
 HTMLParamElement
+HTMLPictureElement
 HTMLPreElement
 HTMLProgressElement
 HTMLQuoteElement

third_party/WebKit/Source/core/core.gypi

@@ -184,6 +184,7 @@
             'html/HTMLOutputElement.idl',
             'html/HTMLParagraphElement.idl',
             'html/HTMLParamElement.idl',
+            'html/HTMLPictureElement.idl',
             'html/HTMLPreElement.idl',
             'html/HTMLProgressElement.idl',
             'html/HTMLQuoteElement.idl',
@@ -2384,6 +2385,7 @@
             'html/HTMLParagraphElement.h',
             'html/HTMLParamElement.cpp',
             'html/HTMLParamElement.h',
+            'html/HTMLPictureElement.cpp',
             'html/HTMLPlugInElement.cpp',
             'html/HTMLPlugInElement.h',
             'html/HTMLPreElement.cpp',

third_party/WebKit/Source/core/html/HTMLPictureElement.cpp

+// 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

third_party/WebKit/Source/core/html/HTMLPictureElement.h

+// 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.
+
+#ifndef HTMLPictureElement_h
+#define HTMLPictureElement_h
+
+#include "core/html/HTMLElement.h"
+
+namespace WebCore {
+
+class HTMLPictureElement FINAL : public HTMLElement {
+public:
+    static PassRefPtr<HTMLPictureElement> create(Document&);
+
+protected:
+    explicit HTMLPictureElement(Document&);
+};
+
+} // namespace
+
+#endif

third_party/WebKit/Source/core/html/HTMLPictureElement.idl

+// 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.
+
+// http://picture.responsiveimages.org
+[
+    RuntimeEnabled=Picture
+] interface HTMLPictureElement : HTMLElement {
+};
+

third_party/WebKit/Source/core/html/HTMLTagNames.in

@@ -97,6 +97,7 @@ output constructorNeedsFormElement
 shadow interfaceName=HTMLShadowElement
 p interfaceName=HTMLParagraphElement
 param
+picture interfaceName=HTMLPictureElement, runtimeEnabled=picture
 plaintext interfaceName=HTMLElement
 pre
 progress interfaceName=HTMLProgressElement