[USS] Store supports hosting multiple datatypes per database

sync/internal_api/public/base/model_type.h

Index: sync/internal_api/public/base/model_type.h
diff --git a/sync/internal_api/public/base/model_type.h b/sync/internal_api/public/base/model_type.h
index 42be7f44a0d778d7288232ef0ac0dcc97021ee6e..fa3e0790c0bba12eeca4fb955a47fea4e8d1712b 100644
--- a/sync/internal_api/public/base/model_type.h
+++ b/sync/internal_api/public/base/model_type.h
@@ -354,6 +354,9 @@ SYNC_EXPORT bool TypeSupportsHierarchy(ModelType model_type);
 // Returns true if |model_type| supports ordering of sibling entries.
 SYNC_EXPORT bool TypeSupportsOrdering(ModelType model_type);
 
+// Returns root_tag for |model_type| in ModelTypeInfo.

[maxbogue, 2016/06/07 23:35:09]

Explain the difference between this and *ToRootTag, since that already exists.

[pavely, 2016/06/08 01:18:07]

Could you place this function right next to ModelTypeToRootTag.
You can make it distinct by naming it for how it is used (e.g.
ModelTypeToStorePrefix) rather than what it returns (ModelTypeToRootTag).

[Gang Wu, 2016/06/08 01:29:28]

Done.

[Gang Wu, 2016/06/20 21:39:21]

Done.

+SYNC_EXPORT const char* ModelTypeToTag(ModelType model_type);
+
 }  // namespace syncer
 
 #endif  // SYNC_INTERNAL_API_PUBLIC_BASE_MODEL_TYPE_H_