Switch to using the dep tool and update all the dependencies

vendor/google.golang.org/appengine/internal/api_common.go

@@ -5,8 +5,6 @@
 package internal
 
 import (
-	"os"
-
 	"github.com/golang/protobuf/proto"
 	netcontext "golang.org/x/net/context"
 )
@@ -86,31 +84,3 @@ func Logf(ctx netcontext.Context, level int64, format string, args ...interface{
 func NamespacedContext(ctx netcontext.Context, namespace string) netcontext.Context {
 	return withNamespace(ctx, namespace)
 }
-
-// SetTestEnv sets the env variables for testing background ticket in Flex.
-func SetTestEnv() func() {
-	var environ = []struct {
-		key, value string
-	}{
-		{"GAE_LONG_APP_ID", "my-app-id"},
-		{"GAE_MINOR_VERSION", "067924799508853122"},
-		{"GAE_MODULE_INSTANCE", "0"},
-		{"GAE_MODULE_NAME", "default"},
-		{"GAE_MODULE_VERSION", "20150612t184001"},
-	}
-
-	for _, v := range environ {
-		old := os.Getenv(v.key)
-		os.Setenv(v.key, v.value)
-		v.value = old
-	}
-	return func() { // Restore old environment after the test completes.
-		for _, v := range environ {
-			if v.value == "" {
-				os.Unsetenv(v.key)
-				continue
-			}
-			os.Setenv(v.key, v.value)
-		}
-	}
-}