Add Blink APIs for frame tree mirroring.

Source/core/html/HTMLFrameOwnerElement.cpp

 /*
  * Copyright (C) 2006, 2007, 2009 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 80 matching lines @@
 }
 
 HTMLFrameOwnerElement::HTMLFrameOwnerElement(const QualifiedName& tagName, Document& document)
     : HTMLElement(tagName, document)
     , m_contentFrame(0)
     , m_widget(nullptr)
     , m_sandboxFlags(SandboxNone)
 {
 }
 
-void HTMLFrameOwnerElement::dispatchLoad()
-{
-    dispatchEvent(Event::create(EventTypeNames::load));
-}
-
-RenderPart* HTMLFrameOwnerElement::renderPart() const
-{
-    // HTMLObjectElement and HTMLEmbedElement may return arbitrary renderers
-    // when using fallback content.
-    if (!renderer() || !renderer()->isRenderPart())
-        return 0;
-    return toRenderPart(renderer());
-}
-
 void HTMLFrameOwnerElement::setContentFrame(Frame& frame)
 {
     // Make sure we will not end up with two frames referencing the same owner element.
     ASSERT(!m_contentFrame || m_contentFrame->owner() != this);
     // Disconnected frames should not be allowed to load.
     ASSERT(inDocument());
     m_contentFrame = &frame;
 
     for (ContainerNode* node = this; node; node = node->parentOrShadowHostNode())
         node->incrementConnectedSubframeCount();
 }
 
 void HTMLFrameOwnerElement::clearContentFrame()
 {
     if (!m_contentFrame)
         return;
 
     m_contentFrame = 0;
 
     for (ContainerNode* node = this; node; node = node->parentOrShadowHostNode())
         node->decrementConnectedSubframeCount();
 }
 
+void HTMLFrameOwnerElement::dispatchLoad()
+{
+    dispatchEvent(Event::create(EventTypeNames::load));
+}
+
+RenderPart* HTMLFrameOwnerElement::renderPart() const
+{
+    // HTMLObjectElement and HTMLEmbedElement may return arbitrary renderers
+    // when using fallback content.
+    if (!renderer() || !renderer()->isRenderPart())
+        return 0;
+    return toRenderPart(renderer());
+}
+
 void HTMLFrameOwnerElement::disconnectContentFrame()
 {
     // FIXME: Currently we don't do this in removedFrom because this causes an
     // unload event in the subframe which could execute script that could then
     // reach up into this document and then attempt to look back down. We should
     // see if this behavior is really needed as Gecko does not allow this.
     if (Frame* frame = contentFrame()) {
         RefPtr<Frame> protect(frame);
         if (frame->isLocalFrame())
             toLocalFrame(frame)->loader().frameDetached();
@@ skipping 118 matching lines @@
     // FIXME: In this case the LocalFrame will have finished loading before
     // it's being added to the child list. It would be a good idea to
     // create the child first, then invoke the loader separately.
     if (childFrame->loader().state() == FrameStateComplete && !childFrame->loader().policyDocumentLoader())
         childFrame->loader().checkCompleted();
     return true;
 }
 
 
 } // namespace WebCore