joinRegistrations  315 sync/android/java/src/org/chromium/sync/notifier/InvalidationService.java         return joinRegistrations(readSyncRegistrationsFromPrefs(),
joinRegistrations  387 sync/android/java/src/org/chromium/sync/notifier/InvalidationService.java         Set<ObjectId> desiredRegistrations = joinRegistrations(desiredNonSyncRegistrations,
joinRegistrations  389 sync/android/java/src/org/chromium/sync/notifier/InvalidationService.java         Set<ObjectId> existingRegistrations = joinRegistrations(existingNonSyncRegistrations,