[Sync] Move GenerateSyncableHash to base.

components/sync/syncable/syncable_util.h

Index: components/sync/syncable/syncable_util.h
diff --git a/components/sync/syncable/syncable_util.h b/components/sync/syncable/syncable_util.h
index 37dbbe95eaf4e5ab8b08060a6bbb9009b67011b9..bcf20d89daf12f31e847c6f2d177ef6f16eec2c0 100644
--- a/components/sync/syncable/syncable_util.h
+++ b/components/sync/syncable/syncable_util.h
@@ -7,11 +7,8 @@
 
 #include <stdint.h>
 
-#include <string>
 #include <vector>
 
-#include "components/sync/base/model_type.h"
-
 namespace tracked_objects {
 class Location;
 }
@@ -37,17 +34,6 @@ bool SyncAssert(bool condition,
 
 int GetUnsyncedEntries(BaseTransaction* trans, std::vector<int64_t>* handles);
 
-// Generates a fixed-length tag for the given string under the given model_type.
-std::string GenerateSyncableHash(ModelType model_type,
-                                 const std::string& client_tag);
-
-// A helper for generating the bookmark type's tag.  This is required in more
-// than one place, so we define the algorithm here to make sure the
-// implementation is consistent.
-std::string GenerateSyncableBookmarkHash(
-    const std::string& originator_cache_guid,
-    const std::string& originator_client_item_id);
-
 }  // namespace syncable
 }  // namespace syncer