[Sync] Simplify GetSessionName interface

chrome/browser/sync/internal_api/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 CHROME_BROWSER_SYNC_INTERNAL_API_SYNC_MANAGER_H_
 #define CHROME_BROWSER_SYNC_INTERNAL_API_SYNC_MANAGER_H_
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/callback_forward.h"
 #include "base/file_path.h"
+#include "base/memory/ref_counted.h"
+#include "base/task_runner.h"
 #include "base/time.h"
 #include "base/threading/thread_checker.h"
 #include "chrome/browser/sync/internal_api/includes/report_unrecoverable_error_function.h"
 #include "chrome/browser/sync/internal_api/includes/unrecoverable_error_handler.h"
 #include "chrome/browser/sync/internal_api/change_record.h"
 #include "chrome/browser/sync/internal_api/configure_reason.h"
 #include "chrome/browser/sync/protocol/sync_protocol_error.h"
 #include "chrome/browser/sync/syncable/model_type.h"
 #include "chrome/browser/sync/util/weak_handle.h"
 #include "chrome/common/net/gaia/google_service_auth_error.h"
@@ skipping 408 matching lines @@
 
   // Initialize the sync manager.  |database_location| specifies the path of
   // the directory in which to locate a sqlite repository storing the syncer
   // backend state. Initialization will open the database, or create it if it
   // does not already exist. Returns false on failure.
   // |event_handler| is the JsEventHandler used to propagate events to
   // chrome://sync-internals.  |event_handler| may be uninitialized.
   // |sync_server_and_path| and |sync_server_port| represent the Chrome sync
   // server to use, and |use_ssl| specifies whether to communicate securely;
   // the default is false.
+  // |blocking_task_runner| is a TaskRunner to be used for tasks that
+  // may block on disk I/O.
   // |post_factory| will be owned internally and used to create
   // instances of an HttpPostProvider.
   // |model_safe_worker| ownership is given to the SyncManager.
   // |user_agent| is a 7-bit ASCII string suitable for use as the User-Agent
   // HTTP header. Used internally when collecting stats to classify clients.
   // |sync_notifier| is owned and used to listen for notifications.
   // |report_unrecoverable_error_function| may be NULL.
   bool Init(const FilePath& database_location,
             const browser_sync::WeakHandle<browser_sync::JsEventHandler>&
                 event_handler,
             const std::string& sync_server_and_path,
             int sync_server_port,
             bool use_ssl,
+            const scoped_refptr<base::TaskRunner>& blocking_task_runner,
             HttpPostProviderFactory* post_factory,
             browser_sync::ModelSafeWorkerRegistrar* registrar,
             browser_sync::ExtensionsActivityMonitor*
                 extensions_activity_monitor,
             ChangeDelegate* change_delegate,
             const std::string& user_agent,
             const SyncCredentials& credentials,
             sync_notifier::SyncNotifier* sync_notifier,
             const std::string& restored_key_for_bootstrapping,
             bool setup_for_test_mode,
@@ skipping 179 matching lines @@
 syncable::ModelTypeSet GetTypesWithEmptyProgressMarkerToken(
     syncable::ModelTypeSet types,
     sync_api::UserShare* share);
 
 // Returns the string representation of a PassphraseRequiredReason value.
 std::string PassphraseRequiredReasonToString(PassphraseRequiredReason reason);
 
 }  // namespace sync_api
 
 #endif  // CHROME_BROWSER_SYNC_INTERNAL_API_SYNC_MANAGER_H_