Add a custom element to own structure of shadow DOM plugin placeholders.

Source/core/testing/Internals.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 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.
@@ skipping 66 matching lines @@
 #include "core/frame/Settings.h"
 #include "core/html/HTMLContentElement.h"
 #include "core/html/HTMLIFrameElement.h"
 #include "core/html/HTMLInputElement.h"
 #include "core/html/HTMLMediaElement.h"
 #include "core/html/HTMLPlugInElement.h"
 #include "core/html/HTMLSelectElement.h"
 #include "core/html/HTMLTextAreaElement.h"
 #include "core/html/canvas/CanvasRenderingContext2D.h"
 #include "core/html/forms/FormController.h"
+#include "core/html/shadow/PluginPlaceholderElement.h"
 #include "core/html/shadow/ShadowElementNames.h"
 #include "core/html/shadow/TextControlInnerElements.h"
 #include "core/inspector/ConsoleMessageStorage.h"
 #include "core/inspector/InspectorClient.h"
 #include "core/inspector/InspectorConsoleAgent.h"
 #include "core/inspector/InspectorController.h"
 #include "core/inspector/InspectorCounters.h"
 #include "core/inspector/InspectorFrontendChannel.h"
 #include "core/inspector/InspectorInstrumentation.h"
 #include "core/inspector/InspectorOverlay.h"
@@ skipping 2143 matching lines @@
     Vector<Document::TransitionElementData> elementData;
     frame()->document()->getTransitionElementData(elementData);
 
     Vector<Document::TransitionElementData>::iterator iter = elementData.begin();
     for (; iter != elementData.end(); ++iter)
         frame()->document()->hideTransitionElements(AtomicString(iter->selector));
 }
 
 void Internals::forcePluginPlaceholder(HTMLElement* element, const String& htmlSource, ExceptionState& exceptionState)
 {
-    if (!element) {
-        exceptionState.throwDOMException(InvalidAccessError, ExceptionMessages::argumentNullOrIncorrectType(1, "HTMLElement"));
-        return;
-    }
     if (!element->isPluginElement()) {
         exceptionState.throwDOMException(InvalidNodeTypeError, "The element provided is not a plugin.");
         return;
     }
+
     element->ensureUserAgentShadowRoot().setInnerHTML(htmlSource, exceptionState);
+    if (exceptionState.hadException())
+        return;
+
     toHTMLPlugInElement(element)->setUsePlaceholderContent(true);
 }
 
+void Internals::forcePluginPlaceholder(HTMLElement* element, const Dictionary& options, ExceptionState& exceptionState)
+{
+    if (!element->isPluginElement()) {
+        exceptionState.throwDOMException(InvalidNodeTypeError, "The element provided is not a plugin.");
+        return;
+    }
+
+    RefPtrWillBeRawPtr<PluginPlaceholderElement> placeholder = PluginPlaceholderElement::create(element->document());
+    String stringValue;
+    if (DictionaryHelper::get(options, "message", stringValue))
+        placeholder->setMessage(stringValue);
+
+    ShadowRoot& shadowRoot = element->ensureUserAgentShadowRoot();
+    shadowRoot.removeChildren();
+    shadowRoot.appendChild(placeholder.release(), exceptionState);
+    if (exceptionState.hadException())
+        return;
+
+    toHTMLPlugInElement(element)->setUsePlaceholderContent(true);
+}
+
 Iterator* Internals::iterator(ScriptState* scriptState, ExceptionState& exceptionState)
 {
     return new InternalsIterator;
 }
 
 } // namespace blink