FYI: Control Data + Per-Device Metadata

sync/internal_api/public/sync_manager.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef SYNC_INTERNAL_API_PUBLIC_SYNC_MANAGER_H_
 #define SYNC_INTERNAL_API_PUBLIC_SYNC_MANAGER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 481 matching lines @@
   // this was created on, which is the sync loop), as sync is effectively
   // stopped.
   virtual void StopSyncingForShutdown(const base::Closure& callback) = 0;
 
   // Issue a final SaveChanges, and close sqlite handles.
   virtual void ShutdownOnSyncThread() = 0;
 
   // May be called from any thread.
   virtual UserShare* GetUserShare() = 0;
 
-  // Inform the cryptographer of the most recent passphrase and set of
-  // encrypted types (from nigori node), then ensure all data that
-  // needs encryption is encrypted with the appropriate passphrase.
-  //
-  // May trigger OnPassphraseRequired().  Otherwise, it will trigger
-  // OnEncryptedTypesChanged() if necessary (see comments for
-  // OnEncryptedTypesChanged()), and then OnEncryptionComplete().
-  //
-  // Also updates or adds device information to the nigori node.
-  //
-  // Note: opens a transaction, so must only be called after syncapi
-  // has been initialized.
-  virtual void RefreshNigori(const std::string& chrome_version,
-                             const base::Closure& done_callback) = 0;
+  virtual void InitialProcessMetadata(const std::string& chrome_version,
+                                      const base::Closure& done_callback) = 0;
 
   // Enable encryption of all sync data. Once enabled, it can never be
   // disabled without clearing the server data.
   //
   // This will trigger OnEncryptedTypesChanged() if necessary (see
   // comments for OnEncryptedTypesChanged()).  It then may trigger
   // OnPassphraseRequired(), but otherwise it will trigger
   // OnEncryptionComplete().
   virtual void EnableEncryptEverything() = 0;
 
   // Reads the nigori node to determine if any experimental features should
   // be enabled.
   // Note: opens a transaction.  May be called on any thread.
   virtual bool ReceivedExperiment(Experiments* experiments) = 0;
 
   // Uses a read-only transaction to determine if the directory being synced has
   // any remaining unsynced items.  May be called on any thread.
   virtual bool HasUnsyncedItems() = 0;
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_INTERNAL_API_PUBLIC_SYNC_MANAGER_H_