Reland: Refactor current GAE abstraction library to be free of the SDK*

go/src/infra/gae/libs/wrapper/gae/commonErrors/errors.go

Index: go/src/infra/gae/libs/wrapper/gae/commonErrors/errors.go
diff --git a/go/src/infra/gae/libs/wrapper/gae/commonErrors/errors.go b/go/src/infra/gae/libs/wrapper/gae/commonErrors/errors.go
deleted file mode 100644
index 780787e37e15b094475f9b9e82bd9facfcca1c09..0000000000000000000000000000000000000000
--- a/go/src/infra/gae/libs/wrapper/gae/commonErrors/errors.go
+++ /dev/null
@@ -1,42 +0,0 @@
-// 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.
-
-package commonErrors
-
-import (
-	"reflect"
-
-	"appengine/datastore"
-	"appengine/memcache"
-	"appengine/taskqueue"
-)
-
-// Common errors originating from the GAE SDK
-var (
-	ErrCASConflictMC = memcache.ErrCASConflict
-	ErrNoStatsMC     = memcache.ErrNoStats
-	ErrCacheMissMC   = memcache.ErrCacheMiss
-	ErrNotStoredMC   = memcache.ErrNotStored
-	ErrServerErrorMC = memcache.ErrServerError
-
-	ErrInvalidKeyDS            = datastore.ErrInvalidKey
-	ErrConcurrentTransactionDS = datastore.ErrConcurrentTransaction
-	ErrNoSuchEntityDS          = datastore.ErrNoSuchEntity
-	ErrInvalidEntityTypeDS     = datastore.ErrInvalidEntityType
-
-	ErrTaskAlreadyAddedTQ = taskqueue.ErrTaskAlreadyAdded
-)
-
-// TODO(riannucci): Add common internal errors which originate from the
-// dev_appserver SDK
-
-// ErrFieldMismatchDS returns a datastore.ErrFieldMismatch struct filled with
-// the given specification
-func ErrFieldMismatchDS(structType reflect.Type, fieldName, reason string) error {
-	return &datastore.ErrFieldMismatch{
-		StructType: structType,
-		FieldName:  fieldName,
-		Reason:     reason,
-	}
-}