Add versioning to perf SQL database

perf/go/skiaperf/main.go

 package main
 
 import (
         "encoding/json"
         "flag"
         "fmt"
         ehtml "html"
         "html/template"
         "math/rand"
         "net"
@@ skipping 984 matching lines @@
                 w.Header().Add("Cache-Control", string(300))
                 fileServer.ServeHTTP(w, r)
         }
 }
 
 func main() {
         flag.Parse()
         flags.Log()
 
         Init()
-        db.Init()
+        db.Init(db.ProdConnectionString(*local))
         stats.Start(nanoTileStore, git)
         alerting.Start(nanoTileStore, *apikey)
         login.Init(*local)
         glog.Infoln("Begin loading data.")
 
         // Resources are served directly.
         http.HandleFunc("/res/", autogzip.HandleFunc(makeResourceHandler()))
 
         http.HandleFunc("/", autogzip.HandleFunc(mainHandler))
         http.HandleFunc("/shortcuts/", shortcutHandler)
@@ skipping 12 matching lines @@
         http.HandleFunc("/compare/", autogzip.HandleFunc(compareHandler))
         http.HandleFunc("/calc/", autogzip.HandleFunc(calcHandler))
         http.HandleFunc("/help/", autogzip.HandleFunc(helpHandler))
         http.HandleFunc("/oauth2callback/", login.OAuth2CallbackHandler)
         http.HandleFunc("/logout/", login.LogoutHandler)
         http.HandleFunc("/loginstatus/", login.StatusHandler)
 
         glog.Infoln("Ready to serve.")
         glog.Fatal(http.ListenAndServe(*port, nil))
 }