Implement accessibility support for CSS-transformed iframes.

third_party/WebKit/public/web/WebAXObject.h

 /*
  * 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 24 matching lines @@
 #include "../platform/WebPoint.h"
 #include "../platform/WebPrivateOwnPtr.h"
 #include "../platform/WebPrivatePtr.h"
 #include "../platform/WebVector.h"
 #include "WebAXEnums.h"
 
 #if BLINK_IMPLEMENTATION
 namespace WTF { template <typename T> class PassRefPtr; }
 #endif
 
+class SkMatrix44;
+
 namespace blink {
 
 class AXObject;
 class ScopedAXObjectCache;
 class WebAXObject;
 class WebNode;
 class WebDocument;
 class WebString;
 class WebURL;
 struct WebPoint;
@@ skipping 220 matching lines @@
     BLINK_EXPORT void characterOffsets(WebVector<int>&) const;
     BLINK_EXPORT void wordBoundaries(WebVector<int>& starts, WebVector<int>& ends) const;
 
     // Scrollable containers.
     BLINK_EXPORT bool isScrollableContainer() const;
     BLINK_EXPORT WebPoint scrollOffset() const;
     BLINK_EXPORT WebPoint minimumScrollOffset() const;
     BLINK_EXPORT WebPoint maximumScrollOffset() const;
     BLINK_EXPORT void setScrollOffset(const WebPoint&) const;
 
+    // Transformation relative to the parent frame, if local (otherwise returns identity).
+    BLINK_EXPORT SkMatrix44 transformFromLocalParentFrame() const;
+
     // Make this object visible by scrolling as many nested scrollable views as needed.
     BLINK_EXPORT void scrollToMakeVisible() const;
     // Same, but if the whole object can't be made visible, try for this subrect, in local coordinates.
     BLINK_EXPORT void scrollToMakeVisibleWithSubFocus(const WebRect&) const;
     // Scroll this object to a given point in global coordinates of the top-level window.
     BLINK_EXPORT void scrollToGlobalPoint(const WebPoint&) const;
 
 #if BLINK_IMPLEMENTATION
     WebAXObject(AXObject*);
     WebAXObject& operator=(AXObject*);
     operator AXObject*() const;
 #endif
 
 private:
     WebPrivatePtr<AXObject> m_private;
 };
 
 } // namespace blink
 
 #endif