[Sync] Move GenerateSyncableHash to base.

components/sync_sessions/sessions_sync_manager.cc

Index: components/sync_sessions/sessions_sync_manager.cc
diff --git a/components/sync_sessions/sessions_sync_manager.cc b/components/sync_sessions/sessions_sync_manager.cc
index b2c62df09a0721c5b8e90df659a0617b76f91b33..acb6882b7bcae3f68e4bfc4110af0daf1694b060 100644
--- a/components/sync_sessions/sessions_sync_manager.cc
+++ b/components/sync_sessions/sessions_sync_manager.cc
@@ -11,12 +11,12 @@
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram_macros.h"
 #include "build/build_config.h"
+#include "components/sync/base/hash_util.h"
 #include "components/sync/device_info/local_device_info_provider.h"
 #include "components/sync/model/sync_error.h"
 #include "components/sync/model/sync_error_factory.h"
 #include "components/sync/model/sync_merge_result.h"
 #include "components/sync/model/time.h"
-#include "components/sync/syncable/syncable_util.h"
 #include "components/sync_sessions/sync_sessions_client.h"
 #include "components/sync_sessions/synced_tab_delegate.h"
 #include "components/sync_sessions/synced_window_delegate.h"
@@ -1134,8 +1134,8 @@ void SessionsSyncManager::DoGarbageCollection() {
 // static
 std::string SessionsSyncManager::TagHashFromSpecifics(
     const sync_pb::SessionSpecifics& specifics) {
-  return syncer::syncable::GenerateSyncableHash(syncer::SESSIONS,
-                                                TagFromSpecifics(specifics));
+  return syncer::GenerateSyncableHash(syncer::SESSIONS,
+                                      TagFromSpecifics(specifics));
 }
 
 };  // namespace sync_sessions