sync-engine-shared - UI can leverage userSites in SyncContext. Ignore unneeded properties from 6.2 plugin
sync-engine-shared - Add validator for illegal system file names
sync-engine-shared - Add methods passing HttpRequest so requests can be canceled
Revert "sync-engine-shared - Add validator for illegal system file names"

This reverts commit 19f196411dfa5099f620437aeb3e0aec24a98be5.
sync-engine-shared - SF
sync-engine-shared - SF
sync-engine-shared - Rename userSitesGroups to syncSites