Interface update, per-method Contexts.

impl/prod/taskqueue.go

Index: impl/prod/taskqueue.go
diff --git a/impl/prod/taskqueue.go b/impl/prod/taskqueue.go
index 86ba154cb81384ac4a865fb14fd23b479bf6945e..5af3d546cfe8609a45f0de9c1c0bbba2ff5b3437 100644
--- a/impl/prod/taskqueue.go
+++ b/impl/prod/taskqueue.go
@@ -17,11 +17,8 @@ import (
 // useTQ adds a gae.TaskQueue implementation to context, accessible
 // by gae.GetTQ(c)
 func useTQ(c context.Context) context.Context {
-	return tq.SetRawFactory(c, func(ci context.Context, wantTxn bool) tq.RawInterface {
-		if wantTxn {
-			return tqImpl{AEContext(ci)}
-		}
-		return tqImpl{AEContextNoTxn(ci)}
+	return tq.SetRawFactory(c, func(ci context.Context) tq.RawInterface {
+		return tqImpl{AEContext(ci)}
 	})
 }
 
@@ -135,6 +132,6 @@ func (t tqImpl) Stats(queueNames []string, cb tq.RawStatsCB) error {
 	return nil
 }
 
-func (t tqImpl) Testable() tq.Testable {
+func (t tqImpl) GetTestable() tq.Testable {
 	return nil
 }