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

sync/protocol/experiments_specifics.proto

-// Copyright (c) 2012 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.
-//
-// Sync protocol datatype extension for experimental feature flags.
-
-syntax = "proto2";
-
-option optimize_for = LITE_RUNTIME;
-option retain_unknown_fields = true;
-
-package sync_pb;
-
-// A flag to enable support for keystore encryption.
-message KeystoreEncryptionFlags {
-  optional bool enabled = 1;
-}
-
-// Whether history delete directives are enabled.
-message HistoryDeleteDirectives {
-  optional bool enabled = 1;
-}
-
-// Whether this client should cull (delete) expired autofill
-// entries when autofill sync is enabled.
-message AutofillCullingFlags {
-  optional bool enabled = 1;
-}
-
-// Whether the favicon sync datatypes are enabled, and what parameters
-// they should operate under.
-message FaviconSyncFlags {
-  optional bool enabled = 1;
-  optional int32 favicon_sync_limit = 2 [default = 200];
-}
-
-// Flags for enabling the experimental no-precommit GU feature.
-message PreCommitUpdateAvoidanceFlags {
-  optional bool enabled = 1;
-}
-
-// Flags for enabling the GCM feature.
-message GcmChannelFlags {
-  optional bool enabled = 1;
-}
-
-// Flags for enabling the experimental enhanced bookmarks feature.
-message EnhancedBookmarksFlags {
-  optional bool enabled = 1;
-  optional string extension_id = 2;
-}
-
-// Flags for enabling GCM channel for invalidations.
-message GcmInvalidationsFlags {
-  optional bool enabled = 1;
-}
-
-// Flags for enabling wallet data syncing.
-message WalletSyncFlags {
-  optional bool enabled = 1;
-}
-
-// Contains one flag or set of related flags.  Each node of the experiments type
-// will have a unique_client_tag identifying which flags it contains.  By
-// convention, the tag name should match the sub-message name.
-message ExperimentsSpecifics {
-  optional KeystoreEncryptionFlags keystore_encryption = 1;
-  optional HistoryDeleteDirectives history_delete_directives = 2;
-  optional AutofillCullingFlags autofill_culling = 3;
-  optional FaviconSyncFlags favicon_sync = 4;
-  optional PreCommitUpdateAvoidanceFlags pre_commit_update_avoidance = 5;
-  optional GcmChannelFlags gcm_channel = 6;
-  // No longer used as of M43.
-  optional EnhancedBookmarksFlags obsolete_enhanced_bookmarks = 7;
-  optional GcmInvalidationsFlags gcm_invalidations = 8;
-  // No longer used as of M51.
-  optional WalletSyncFlags obsolete_wallet_sync = 9;
-}