Picture element initial implementation

Source/core/html/HTMLSourceElement.cpp

Index: Source/core/html/HTMLSourceElement.cpp
diff --git a/Source/core/html/HTMLSourceElement.cpp b/Source/core/html/HTMLSourceElement.cpp
index e54994aaf17a4c9e31760e44766d7fd50e5a658d..adf2516edebbc483dfa28c17bae939cbedab6097 100644
--- a/Source/core/html/HTMLSourceElement.cpp
+++ b/Source/core/html/HTMLSourceElement.cpp
@@ -31,6 +31,9 @@
 #include "EventNames.h"
 #include "HTMLDocument.h"
 #include "HTMLMediaElement.h"
+#if ENABLE(PICTURE)
+#include "HTMLPictureElement.h"
+#endif
 #include "HTMLNames.h"
 #include "Logging.h"
 
@@ -60,6 +63,10 @@ Node::InsertionNotificationRequest HTMLSourceElement::insertedInto(ContainerNode
     Element* parent = parentElement();
     if (parent && parent->isMediaElement())
         static_cast<HTMLMediaElement*>(parentNode())->sourceWasAdded(this);
+#if ENABLE(PICTURE)
+    if (parent && parent->isPictureElement())
+        static_cast<HTMLPictureElement*>(parentNode())->sourceWasAdded();
+#endif
     return InsertionDone;
 }
 
@@ -78,6 +85,11 @@ void HTMLSourceElement::setSrc(const String& url)
     setAttribute(srcAttr, url);
 }
 
+String HTMLSourceElement::src() const
+{
+    return getAttribute(srcAttr);
+}
+
 String HTMLSourceElement::media() const
 {
     return getAttribute(mediaAttr);