Let unresolved custom element go through CustomElementCallbackQueue.

Source/core/dom/custom/CustomElementResolutionInvocation.cpp

Index: Source/core/dom/custom/CustomElementResolutionInvocation.cpp
diff --git a/Source/modules/mediastream/NavigatorUserMediaError.cpp b/Source/core/dom/custom/CustomElementResolutionInvocation.cpp
similarity index 75%
copy from Source/modules/mediastream/NavigatorUserMediaError.cpp
copy to Source/core/dom/custom/CustomElementResolutionInvocation.cpp
index e9cef28d55f28832dcf3cf43e3528dda82d29eec..5b50b805b226b61be8c4a8f2b130f2725988e875 100644
--- a/Source/modules/mediastream/NavigatorUserMediaError.cpp
+++ b/Source/core/dom/custom/CustomElementResolutionInvocation.cpp
@@ -29,22 +29,21 @@
  */
 
 #include "config.h"
-#include "modules/mediastream/NavigatorUserMediaError.h"
+#include "core/dom/custom/CustomElementResolutionInvocation.h"
+
+#include "core/dom/Element.h"
+#include "core/dom/custom/CustomElementRegistrationContext.h"
 
 namespace WebCore {
 
-String NavigatorUserMediaError::name() const
+PassOwnPtr<CustomElementResolutionInvocation> CustomElementResolutionInvocation::createInvocation(const CustomElementDescriptor& descriptor)
 {
-    switch (m_name) {
-    case NamePermissionDenied:
-        return "PermissionDeniedError";
-
-    case NameConstraintNotSatisfied:
-        return "ConstraintNotSatisfiedError";
-    }
+    return adoptPtr(new CustomElementResolutionInvocation(descriptor));
+}
 
-    ASSERT_NOT_REACHED();
-    return String();
+void CustomElementResolutionInvocation::dispatch(Element* element)
+{
+    element->document().registrationContext()->resolvePoppedElement(element, m_descriptor);
 }
 
 } // namespace WebCore