[Sync] Move keystore key handling to SyncEncryptionHandlerImpl

chrome/browser/sync/glue/sync_backend_host.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 CHROME_BROWSER_SYNC_GLUE_SYNC_BACKEND_HOST_H_
 #define CHROME_BROWSER_SYNC_GLUE_SYNC_BACKEND_HOST_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 360 matching lines @@
     NOT_INITIALIZED,        // Initialization hasn't completed, but we've
                             // constructed a SyncManager.
     DOWNLOADING_NIGORI,     // The SyncManager is initialized, but
                             // we're fetching sync encryption information.
     ASSOCIATING_NIGORI,     // The SyncManager is initialized, and we
                             // have the sync encryption information, but we
                             // have to update the local encryption state.
     INITIALIZED,            // Initialization is complete.
   };
 
-  // Enum used to distinguish which bootstrap encryption token is being updated.
-  enum BootstrapTokenType {
-    PASSPHRASE_BOOTSTRAP_TOKEN,
-    KEYSTORE_BOOTSTRAP_TOKEN
-  };
-
   // Checks if we have received a notice to turn on experimental datatypes
   // (via the nigori node) and informs the frontend if that is the case.
   // Note: it is illegal to call this before the backend is initialized.
   void AddExperimentalTypes();
 
   // Downloading of nigori failed and will be retried.
   void OnNigoriDownloadRetry();
 
   // InitializationComplete passes through the SyncBackendHost to forward
   // on to |frontend_|, and so that tests can intercept here if they need to
@@ skipping 10 matching lines @@
   // eventually retry. FinishingConfigurationOnFrontendLoop(..) will be called
   // on successful completion.
   void RetryConfigurationOnFrontendLoop(const base::Closure& retry_callback);
 
   // Helpers to persist a token that can be used to bootstrap sync encryption
   // across browser restart to avoid requiring the user to re-enter their
   // passphrase.  |token| must be valid UTF-8 as we use the PrefService for
   // storage.
   void PersistEncryptionBootstrapToken(
       const std::string& token,
-      BootstrapTokenType token_type);
+      syncer::BootstrapTokenType token_type);
 
   // For convenience, checks if initialization state is INITIALIZED.
   bool initialized() const { return initialization_state_ == INITIALIZED; }
 
   // Let the front end handle the actionable error event.
   void HandleActionableErrorEventOnFrontendLoop(
       const syncer::SyncProtocolError& sync_error);
 
   // Checks if |passphrase| can be used to decrypt the cryptographer's pending
   // keys that were cached during NotifyPassphraseRequired. Returns true if
@@ skipping 113 matching lines @@
   // it via OnBackendInitialized in the final state of
   // HandleInitializationCompletedOnFrontendLoop.
   syncer::WeakHandle<syncer::JsBackend> js_backend_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncBackendHost);
 };
 
 }  // namespace browser_sync
 
 #endif  // CHROME_BROWSER_SYNC_GLUE_SYNC_BACKEND_HOST_H_