observe            78 Source/core/dom/MutationObserver.cpp void MutationObserver::observe(Node* node, const Dictionary& optionsDictionary, ExceptionState& exceptionState)
observe            58 Source/core/dom/custom/CustomElementObserver.cpp void CustomElementObserver::observe(Element* element)
observe           957 Source/platform/heap/HeapTest.cpp     static ObserverMap& observe(Observable& target)