observableObject  499 Source/core/accessibility/AXObject.h     virtual AXObject* observableObject() const { return 0; }
observableObject  759 Source/core/accessibility/AXObjectCache.cpp         object = object->observableObject();
observableObject  175 Source/core/accessibility/AXRenderObject.h     virtual AXObject* observableObject() const OVERRIDE;
observableObject   63 Source/core/accessibility/AXTableRow.h     virtual AXObject* observableObject() const OVERRIDE FINAL;