Send AXLayoutComplete even when document hasn't finished loading yet (reland)

Source/core/frame/FrameView.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Dirk Mueller <mueller@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *           (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
@@ skipping 956 matching lines @@
 
     if (!inSubtreeLayout && !toRenderView(rootForThisLayout)->document().printing())
         adjustViewSize();
 
     layer->updateLayerPositionsAfterLayout(renderView()->layer(), updateLayerPositionFlags(layer, inSubtreeLayout, m_doFullRepaint));
 
     updateCompositingLayersAfterLayout();
 
     m_layoutCount++;
 
-    if (AXObjectCache* cache = rootForThisLayout->document().existingAXObjectCache())
-        cache->postNotification(rootForThisLayout, AXObjectCache::AXLayoutComplete, true);
+    if (AXObjectCache* cache = rootForThisLayout->document().axObjectCache())
+        cache->handleLayoutComplete(rootForThisLayout);
     updateAnnotatedRegions();
 
     ASSERT(!rootForThisLayout->needsLayout());
 
     if (document->hasListenerType(Document::OVERFLOWCHANGED_LISTENER))
         updateOverflowStatus(layoutSize().width() < contentsWidth(), layoutSize().height() < contentsHeight());
 
     scheduleOrPerformPostLayoutTasks();
 
     InspectorInstrumentation::didLayout(cookie, rootForThisLayout);
@@ skipping 2230 matching lines @@
 void FrameView::willRemoveScrollbar(Scrollbar* scrollbar, ScrollbarOrientation orientation)
 {
     ScrollableArea::willRemoveScrollbar(scrollbar, orientation);
     if (AXObjectCache* cache = axObjectCache()) {
         cache->remove(scrollbar);
         cache->handleScrollbarUpdate(this);
     }
 }
 
 } // namespace WebCore