Two of Gov. Jerry Brown’s legacy projects were on the line Tuesday, as Californians decided whether to require a statewide vote for any state mega-project requiring $2 billion or more in revenue bonds. If Californians approve the revenue-bond measure, Proposition 53, Brown’s plans for $64 billion in high-speed rail and $15.7 billion for two giant tunnels that would carry Northern California water south may have to face their own statewide votes. Brown, who is pushing to launch both projects before he leaves office in 2018, has made defeating the ballot measure a priority.