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

sync/protocol/history_delete_directive_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 history delete directives.
-
-// Update proto_value_conversions{.h,.cc,_unittest.cc} if you change
-// any fields in this file.
-
-syntax = "proto2";
-
-option optimize_for = LITE_RUNTIME;
-option retain_unknown_fields = true;
-
-package sync_pb;
-
-// All timestamps below are from Sane Time (
-// http://www.chromium.org/developers/design-documents/sane-time )
-// and are in microseconds since the Unix epoch.
-
-// Properties of history delete directive sync objects.
-message HistoryDeleteDirectiveSpecifics {
-  // Exactly one of the fields below must be filled in.  Otherwise, this
-  // delete directive must be ignored.
-  optional GlobalIdDirective global_id_directive = 1;
-  optional TimeRangeDirective time_range_directive = 2;
-}
-
-message GlobalIdDirective {
-  // The global IDs of the navigations to delete.
-  repeated int64 global_id = 1;
-
-  // Time range for searching for navigations to delete. Client should delete
-  // all navigations to a URL between [start_time_usec, end_time_usec]
-  // if one of them matches a |global_id|.
-  optional int64 start_time_usec = 2;
-  optional int64 end_time_usec = 3;
-}
-
-message TimeRangeDirective {
-  // Both fields below must be filled in.  Otherwise, this delete directive
-  // must be ignored.
-
-  // The time on or after which entries must be deleted.
-  optional int64 start_time_usec = 1;
-  // The time on or before which entries must be deleted.
-  optional int64 end_time_usec = 2;
-}