Anytime Chrome closes for me, whether intentionally or due to crash, it either automatically opens all the tabs I had or asks me if I want to open them. Recently I accidentally closed my browser window, but when I opened a new one, the first option on the list of sites I'd recently visited was XX Tabs (it was the number of them, I just don't remember the specific one), and when I clicked that it opened everything back up to the way I had it.