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

sync/protocol/favicon_tracking_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 the favicon tracking type.
-
-syntax = "proto2";
-
-option optimize_for = LITE_RUNTIME;
-option retain_unknown_fields = true;
-
-package sync_pb;
-
-// Tracking info for of favicon images. These control expiration of images
-// from sync based on recency, bookmark state, etc.
-message FaviconTrackingSpecifics {
-  // The url of the favicon image.
-  optional string favicon_url= 1;
-  // The last time a page using this favicon was visited (in milliseconds
-  // since linux epoch).
-  optional int64 last_visit_time_ms = 3;
-  // Whether this favicon is currently bookmarked or not.
-  optional bool is_bookmarked = 4;
-}