Revert of [Sync] Move //components/sync to the syncer namespace. (patchset #5 id:40001 of https://co

components/sync/driver/glue/sync_backend_host.h

 // Copyright 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 COMPONENTS_SYNC_DRIVER_GLUE_SYNC_BACKEND_HOST_H_
 #define COMPONENTS_SYNC_DRIVER_GLUE_SYNC_BACKEND_HOST_H_
 
 #include <memory>
 #include <string>
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/threading/thread.h"
 #include "components/sync/base/model_type.h"
 #include "components/sync/base/weak_handle.h"
 #include "components/sync/core/configure_reason.h"
 #include "components/sync/core/shutdown_reason.h"
 #include "components/sync/core/sync_manager.h"
 #include "components/sync/core/sync_manager_factory.h"
 #include "components/sync/driver/backend_data_type_configurer.h"
 #include "components/sync/engine/cycle/sync_cycle_snapshot.h"
 
 class GURL;
 
 namespace base {
 class MessageLoop;
-}  // namespace base
+}
 
 namespace syncer {
-
 class CancelationSignal;
-class ChangeProcessor;
 class HttpPostProviderFactory;
-class SyncFrontend;
 class SyncManagerFactory;
 class UnrecoverableErrorHandler;
+}
+
+namespace sync_driver {
+class ChangeProcessor;
+class SyncFrontend;
+}
+
+namespace browser_sync {
 
 // An API to "host" the top level SyncAPI element.
 //
 // This class handles dispatch of potentially blocking calls to appropriate
 // threads and ensures that the SyncFrontend is only accessed on the UI loop.
-class SyncBackendHost : public BackendDataTypeConfigurer {
+class SyncBackendHost : public sync_driver::BackendDataTypeConfigurer {
  public:
-  typedef SyncStatus Status;
-  typedef base::Callback<std::unique_ptr<HttpPostProviderFactory>(
-      CancelationSignal*)>
+  typedef syncer::SyncStatus Status;
+  typedef base::Callback<std::unique_ptr<syncer::HttpPostProviderFactory>(
+      syncer::CancelationSignal*)>
       HttpPostProviderFactoryGetter;
 
   // Stubs used by implementing classes.
   SyncBackendHost();
   ~SyncBackendHost() override;
 
   // Called on the frontend's thread to kick off asynchronous initialization.
   // Optionally deletes the "Sync Data" folder during init in order to make
   // sure we're starting fresh.
   //
   // |saved_nigori_state| is optional nigori state to restore from a previous
   // backend instance. May be null.
   virtual void Initialize(
-      SyncFrontend* frontend,
+      sync_driver::SyncFrontend* frontend,
       std::unique_ptr<base::Thread> sync_thread,
       const scoped_refptr<base::SingleThreadTaskRunner>& db_thread,
       const scoped_refptr<base::SingleThreadTaskRunner>& file_thread,
-      const WeakHandle<JsEventHandler>& event_handler,
+      const syncer::WeakHandle<syncer::JsEventHandler>& event_handler,
       const GURL& service_url,
       const std::string& sync_user_agent,
-      const SyncCredentials& credentials,
+      const syncer::SyncCredentials& credentials,
       bool delete_sync_data_folder,
-      std::unique_ptr<SyncManagerFactory> sync_manager_factory,
-      const WeakHandle<UnrecoverableErrorHandler>& unrecoverable_error_handler,
+      std::unique_ptr<syncer::SyncManagerFactory> sync_manager_factory,
+      const syncer::WeakHandle<syncer::UnrecoverableErrorHandler>&
+          unrecoverable_error_handler,
       const base::Closure& report_unrecoverable_error_function,
       const HttpPostProviderFactoryGetter& http_post_provider_factory_getter,
-      std::unique_ptr<SyncEncryptionHandler::NigoriState>
+      std::unique_ptr<syncer::SyncEncryptionHandler::NigoriState>
           saved_nigori_state) = 0;
 
   // Called on the frontend's thread to trigger a refresh.
-  virtual void TriggerRefresh(const ModelTypeSet& types) = 0;
+  virtual void TriggerRefresh(const syncer::ModelTypeSet& types) = 0;
 
   // Called on the frontend's thread to update SyncCredentials.
-  virtual void UpdateCredentials(const SyncCredentials& credentials) = 0;
+  virtual void UpdateCredentials(
+      const syncer::SyncCredentials& credentials) = 0;
 
   // This starts the SyncerThread running a Syncer object to communicate with
   // sync servers.  Until this is called, no changes will leave or enter this
   // browser from the cloud / sync servers.
   // Called on |frontend_loop_|.
   virtual void StartSyncingWithServer() = 0;
 
   // Called on |frontend_loop_| to asynchronously set a new passphrase for
   // encryption. Note that it is an error to call SetEncryptionPassphrase under
   // the following circumstances:
@@ skipping 26 matching lines @@
   // See the implementation and Core::DoShutdown for details.
   // Must be called *after* StopSyncingForShutdown.
   // For any reason other than BROWSER_SHUTDOWN, caller should claim sync
   // thread because:
   // * during browser shutdown sync thread is not claimed to avoid blocking
   //   browser shutdown on sync shutdown.
   // * otherwise sync thread is claimed so that if sync backend is recreated
   //   later, initialization of new backend is serialized on previous sync
   //   thread after cleanup of previous backend to avoid old/new backends
   //   interfere with each other.
-  virtual std::unique_ptr<base::Thread> Shutdown(ShutdownReason reason) = 0;
+  virtual std::unique_ptr<base::Thread> Shutdown(
+      syncer::ShutdownReason reason) = 0;
 
   // Removes all current registrations from the backend on the
   // InvalidationService.
   virtual void UnregisterInvalidationIds() = 0;
 
   // Changes the set of data types that are currently being synced.
   // The ready_task will be run when configuration is done with the
   // set of all types that failed configuration (i.e., if its argument
   // is non-empty, then an error was encountered).
   // Returns the set of types that are ready to start without needing any
   // further sync activity.
   // BackendDataTypeConfigurer implementation.
-  ModelTypeSet ConfigureDataTypes(
-      ConfigureReason reason,
+  syncer::ModelTypeSet ConfigureDataTypes(
+      syncer::ConfigureReason reason,
       const DataTypeConfigStateMap& config_state_map,
-      const base::Callback<void(ModelTypeSet, ModelTypeSet)>& ready_task,
+      const base::Callback<void(syncer::ModelTypeSet, syncer::ModelTypeSet)>&
+          ready_task,
       const base::Callback<void()>& retry_callback) override = 0;
 
   // Turns on encryption of all present and future sync data.
   virtual void EnableEncryptEverything() = 0;
 
   // Called on |frontend_loop_| to obtain a handle to the UserShare needed for
   // creating transactions.  Should not be called before we signal
   // initialization is complete with OnBackendInitialized().
-  virtual UserShare* GetUserShare() const = 0;
+  virtual syncer::UserShare* GetUserShare() const = 0;
 
   // Called from any thread to obtain current status information in detailed or
   // summarized form.
   virtual Status GetDetailedStatus() = 0;
-  virtual SyncCycleSnapshot GetLastCycleSnapshot() const = 0;
+  virtual syncer::SyncCycleSnapshot GetLastCycleSnapshot() const = 0;
 
   // Determines if the underlying sync engine has made any local changes to
   // items that have not yet been synced with the server.
   // ONLY CALL THIS IF OnInitializationComplete was called!
   virtual bool HasUnsyncedItems() const = 0;
 
   // Whether or not we are syncing encryption keys.
   virtual bool IsNigoriEnabled() const = 0;
 
   // Returns the type of passphrase being used to encrypt data. See
   // sync_encryption_handler.h.
-  virtual PassphraseType GetPassphraseType() const = 0;
+  virtual syncer::PassphraseType GetPassphraseType() const = 0;
 
   // If an explicit passphrase is in use, returns the time at which that
   // passphrase was set (if available).
   virtual base::Time GetExplicitPassphraseTime() const = 0;
 
   // True if the cryptographer has any keys available to attempt decryption.
   // Could mean we've downloaded and loaded Nigori objects, or we bootstrapped
   // using a token previously received.
-  virtual bool IsCryptographerReady(const BaseTransaction* trans) const = 0;
+  virtual bool IsCryptographerReady(
+      const syncer::BaseTransaction* trans) const = 0;
 
-  virtual void GetModelSafeRoutingInfo(ModelSafeRoutingInfo* out) const = 0;
+  virtual void GetModelSafeRoutingInfo(
+      syncer::ModelSafeRoutingInfo* out) const = 0;
 
   // Send a message to the sync thread to persist the Directory to disk.
   virtual void FlushDirectory() const = 0;
 
   // Requests that the backend forward to the fronent any protocol events in
   // its buffer and begin forwarding automatically from now on.  Repeated calls
   // to this function may result in the same events being emitted several
   // times.
   virtual void RequestBufferedProtocolEventsAndEnableForwarding() = 0;
 
   // Disables protocol event forwarding.
   virtual void DisableProtocolEventForwarding() = 0;
 
   // Enables the sending of directory type debug counters.  Also, for every
   // time it is called, it makes an explicit request that updates to an update
   // for all counters be emitted.
   virtual void EnableDirectoryTypeDebugInfoForwarding() = 0;
 
   // Disables the sending of directory type debug counters.
   virtual void DisableDirectoryTypeDebugInfoForwarding() = 0;
 
   virtual base::MessageLoop* GetSyncLoopForTesting() = 0;
 
   // Triggers sync cycle to update |types|.
-  virtual void RefreshTypesForTest(ModelTypeSet types) = 0;
+  virtual void RefreshTypesForTest(syncer::ModelTypeSet types) = 0;
 
   // See SyncManager::ClearServerData.
   virtual void ClearServerData(
-      const SyncManager::ClearServerDataCallback& callback) = 0;
+      const syncer::SyncManager::ClearServerDataCallback& callback) = 0;
 
   // Notify the syncer that the cookie jar has changed.
   // See SyncManager::OnCookieJarChanged.
   virtual void OnCookieJarChanged(bool account_mismatch, bool empty_jar) = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(SyncBackendHost);
 };
 
-}  // namespace syncer
+}  // namespace browser_sync
 
 #endif  // COMPONENTS_SYNC_DRIVER_GLUE_SYNC_BACKEND_HOST_H_