Change gae to apache 2 license.

impl/prod/mail.go

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
+// Copyright 2015 The LUCI Authors. All rights reserved.
+// Use of this source code is governed under the Apache License, Version 2.0
+// that can be found in the LICENSE file.
 
 package prod
 
 import (
         gae_mail "github.com/luci/gae/service/mail"
         "golang.org/x/net/context"
         "google.golang.org/appengine/mail"
 )
 
 // useMail adds a mail service implementation to context, accessible
@@ skipping 12 matching lines @@
         return mail.Send(m.aeCtx, msg.ToSDKMessage())
 }
 
 func (m mailImpl) SendToAdmins(msg *gae_mail.Message) error {
         return mail.Send(m.aeCtx, msg.ToSDKMessage())
 }
 
 func (m mailImpl) Testable() gae_mail.Testable {
         return nil
 }