Implement accessibility support for CSS-transformed iframes.

third_party/WebKit/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 12 matching lines @@
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "public/web/WebAXObject.h"
 
+#include "SkMatrix44.h"
 #include "core/HTMLNames.h"
 #include "core/css/CSSPrimitiveValueMappings.h"
 #include "core/dom/Document.h"
 #include "core/dom/Node.h"
 #include "core/frame/FrameHost.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/VisualViewport.h"
 #include "core/input/EventHandler.h"
 #include "core/layout/LayoutView.h"
 #include "core/style/ComputedStyle.h"
@@ skipping 1456 matching lines @@
     if (!isDetached())
         m_private->scrollToMakeVisibleWithSubFocus(subfocus);
 }
 
 void WebAXObject::scrollToGlobalPoint(const WebPoint& point) const
 {
     if (!isDetached())
         m_private->scrollToGlobalPoint(point);
 }
 
+SkMatrix44 WebAXObject::transformFromLocalParentFrame() const
+{
+    if (isDetached())
+        return SkMatrix44();
+
+    return m_private->transformFromLocalParentFrame();
+}
+
 WebAXObject::WebAXObject(AXObject* object)
     : m_private(object)
 {
 }
 
 WebAXObject& WebAXObject::operator=(AXObject* object)
 {
     m_private = object;
     return *this;
 }
 
 WebAXObject::operator AXObject*() const
 {
     return m_private.get();
 }
 
 } // namespace blink