[Sync] Move //components/sync to the syncer namespace.

chrome/browser/sync/test/integration/migration_watcher.h

 // Copyright 2014 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_TEST_INTEGRATION_MIGRATION_WATCHER_H_
 #define CHROME_BROWSER_SYNC_TEST_INTEGRATION_MIGRATION_WATCHER_H_
 
 #include "base/macros.h"
 #include "components/sync/base/model_type.h"
 #include "components/sync/driver/backend_migrator.h"
 
 class ProfileSyncServiceHarness;
 class MigrationWaiter;
 
 // Helper class to observe and record migration state.
-class MigrationWatcher : public browser_sync::MigrationObserver {
+class MigrationWatcher : public syncer::MigrationObserver {
  public:
   explicit MigrationWatcher(ProfileSyncServiceHarness* harness);
   ~MigrationWatcher() override;
 
   // Returns true if the observed profile has a migration in progress.
   bool HasPendingBackendMigration() const;
 
   // Returns the set of types this class has observed being migrated.
   syncer::ModelTypeSet GetMigratedTypes() const;
 
-  // Implementation of browser_sync::MigrationObserver.
+  // Implementation of syncer::MigrationObserver.
   void OnMigrationStateChange() override;
 
   // Registers the |waiter| to receive callbacks on migration state change.
   void set_migration_waiter(MigrationWaiter* waiter);
 
   // Unregisters the current MigrationWaiter, if any.
   void clear_migration_waiter();
 
  private:
   // The ProfileSyncServiceHarness to watch.
   ProfileSyncServiceHarness* const harness_;
 
   // The set of data types currently undergoing migration.
   syncer::ModelTypeSet pending_types_;
 
   // The set of data types for which migration is complete. Accumulated by
   // successive calls to OnMigrationStateChanged.
   syncer::ModelTypeSet migrated_types_;
 
   // The MigrationWatier that is waiting for this migration to complete.
   MigrationWaiter* migration_waiter_;
 
   DISALLOW_COPY_AND_ASSIGN(MigrationWatcher);
 };
 
 #endif  // CHROME_BROWSER_SYNC_TEST_INTEGRATION_MIGRATION_WATCHER_H_