Change gae to apache 2 license.

service/user/testable.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 user
 
 // Testable is the interface that test implimentations will provide.
 type Testable interface {
         // SetUser sets the user to a pre-populated User object.
         SetUser(*User)
 
         // Login will generate and set a new User object with values derived from
         // email clientID, and admin values. If clientID is provided, the User will
         // look like they logged in with OAuth. If it's empty, then this will look
         // like they logged in via the cookie auth method.
         Login(email, clientID string, admin bool)
 
         // Equivalent to SetUser(nil), but a bit more obvious to read in the code :).
         Logout()
 }