Change gae to apache 2 license.

filter/featureBreaker/mod.go

-// Copyright 2016 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 2016 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 featureBreaker
 
 import (
         "golang.org/x/net/context"
 
         "github.com/luci/gae/service/module"
 )
 
 type modState struct {
@@ skipping 52 matching lines @@
         })
 }
 
 // FilterModule installs a featureBreaker module filter in the context.
 func FilterModule(c context.Context, defaultError error) (context.Context, FeatureBreaker) {
         state := newState(defaultError)
         return module.AddFilters(c, func(ic context.Context, i module.Interface) module.Interface {
                 return &modState{state, i}
         }), state
 }