1. A method comprising: executing, by a processor of a computing device, a web browser presentation environment; presenting at least one web page within a context of the web browser presentation environment, wherein presenting within the web browser presentation environment includes maintaining a first presentation data structure that includes a web browser presentation data structure portion and a common presentation data structure portion; receiving a request to move the presentation of the web page from the web browser presentation environment to an emulation-based presentation environment; and moving the presentation of the web page from the web browser presentation environment to the emulation-based presentation environment, wherein moving includes maintaining a second presentation data structure that includes an emulation-based presentation data structure portion and the common data structure portion.