setCompositionFromExistingText  318 Source/core/editing/InputMethodController.cpp void InputMethodController::setCompositionFromExistingText(const Vector<CompositionUnderline>& underlines, unsigned compositionStart, unsigned compositionEnd)
setCompositionFromExistingText 1331 Source/web/WebFrameImpl.cpp bool WebFrameImpl::setCompositionFromExistingText(int compositionStart, int compositionEnd, const WebVector<WebCompositionUnderline>& underlines)