[Sync] Move //sync to //components/sync.

sync/protocol/experiment_status.proto

-// Copyright 2014 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
-
-syntax = "proto2";
-
-option optimize_for = LITE_RUNTIME;
-
-package sync_pb;
-
-import "experiments_specifics.proto";
-
-// This request allows an unauthenticated client to check the status of the
-// experiments which do not require user authentication.  The status of an
-// experiment for a specific client can be determined based on the user agent
-// string and/or the client id sent in the HTTPS POST request.
-message ExperimentStatusRequest {
-  // Enumerates the experiments for which the status should be returned.  An
-  // experiment name must be the same as one of the field names specified in
-  // ExperimentsSpecifics.  See sync/protocol/experiments_specifics.proto.
-  repeated string experiment_name = 1;
-}
-
-// Response to an experiment status request.
-message ExperimentStatusResponse {
-  // Minimal time to wait before issuing another request.
-  optional int32 poll_interval_seconds = 1 [default = 3600];
-
-  // The experiments that the client has asked for, with each experiment
-  // containing exactly one experiment flag.  The client can inspect the
-  // embedded flag to obtain the experiment status.  Note that the number of
-  // experiments should be less than or equal to the number of experiment_name
-  // sent in the request since it is possible that there is no experiment
-  // matching an experiment_name.
-  repeated ExperimentsSpecifics experiment = 2;
-}