[Sync] Move GenerateSyncableHash to base.

components/sync/model_impl/processor_entity_tracker.cc

 // 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.
 
 #include "components/sync/model_impl/processor_entity_tracker.h"
 
 #include "base/base64.h"
 #include "base/sha1.h"
 #include "components/sync/base/time.h"
 #include "components/sync/engine/non_blocking_sync_common.h"
-#include "components/sync/syncable/syncable_util.h"
 
 namespace syncer {
 
 namespace {
 
 void HashSpecifics(const sync_pb::EntitySpecifics& specifics,
                    std::string* hash) {
   DCHECK_GT(specifics.ByteSize(), 0);
   base::Base64Encode(base::SHA1HashString(specifics.SerializeAsString()), hash);
 }
@@ skipping 219 matching lines @@
 void ProcessorEntityTracker::UpdateSpecificsHash(
     const sync_pb::EntitySpecifics& specifics) {
   if (specifics.ByteSize() > 0) {
     HashSpecifics(specifics, metadata_.mutable_specifics_hash());
   } else {
     metadata_.clear_specifics_hash();
   }
 }
 
 }  // namespace syncer