Make AX update layout on all frames

Source/web/WebAXObject.cpp

 /*
  * Copyright (C) 2009 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 89 matching lines @@
 }
 
 int WebAXObject::axID() const
 {
     if (isDetached())
         return -1;
 
     return m_private->axObjectID();
 }
 
+bool WebAXObject::updateLayoutAndCheckValidity()
+{
+    if (!isDetached()) {
+        Document* document = m_private->document();
+        if (!document || !document->topDocument().view())
+            return false;
+        document->topDocument().view()->updateLayoutAndStyleIfNeededRecursive();
+    }
+
+    // Doing a layout can cause this object to be invalid, so check again.
+    return !isDetached();
+}
+
 bool WebAXObject::updateBackingStoreAndCheckValidity()
 {
-    if (!isDetached())
-        m_private->updateBackingStore();
-    return !isDetached();
+    return updateLayoutAndCheckValidity();
 }
 
 WebString WebAXObject::accessibilityDescription() const
 {
     if (isDetached())
         return WebString();
 
     return m_private->accessibilityDescription();
 }
 
@@ skipping 401 matching lines @@
     m_private->ariaOwnsElements(owns);
 
     WebVector<WebAXObject> result(owns.size());
     for (size_t i = 0; i < owns.size(); i++)
         result[i] = WebAXObject(owns[i]);
     ownsElements.swap(result);
 
     return true;
 }
 
+#if ASSERT_ENABLED
+static bool isLayoutClean(Document* document)
+{
+    if (!document || !document->view())
+        return false;
+    return document->lifecycle().state() >= DocumentLifecycle::LayoutClean
+        || (document->lifecycle().state() == DocumentLifecycle::StyleClean && !document->view()->needsLayout());
+}
+#endif
+
 WebRect WebAXObject::boundingBoxRect() const
 {
     if (isDetached())
         return WebRect();
 
     // It's not safe to call boundingBoxRect if a layout is pending.
-    // Clients should call updateBackingStoreAndCheckValidity first.
-    ASSERT(m_private->document() && m_private->document()->lifecycle().state() >= DocumentLifecycle::LayoutClean);
+    // Clients should call updateLayoutAndCheckValidity first.
+    ASSERT(isLayoutClean(m_private->document()));
 
     return pixelSnappedIntRect(m_private->elementRect());
 }
 
 bool WebAXObject::canvasHasFallbackContent() const
 {
     if (isDetached())
         return false;
 
     return m_private->canvasHasFallbackContent();
@@ skipping 596 matching lines @@
     m_private = object;
     return *this;
 }
 
 WebAXObject::operator WTF::PassRefPtr<WebCore::AXObject>() const
 {
     return m_private.get();
 }
 
 } // namespace blink