[Sync] Remove unneeded 'using syncer::' lines and 'syncer::' scopings

sync/engine/sync_scheduler.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.
 //
 // A class to schedule syncer tasks intelligently.
 #ifndef SYNC_ENGINE_SYNC_SCHEDULER_H_
 #define SYNC_ENGINE_SYNC_SCHEDULER_H_
 
 #include <string>
 
@@ skipping 15 matching lines @@
 struct ServerConnectionEvent;
 
 struct ConfigurationParams {
   enum KeystoreKeyStatus {
     KEYSTORE_KEY_UNNECESSARY,
     KEYSTORE_KEY_NEEDED
   };
   ConfigurationParams();
   ConfigurationParams(
       const sync_pb::GetUpdatesCallerInfo::GetUpdatesSource& source,
-      const syncer::ModelTypeSet& types_to_download,
-      const syncer::ModelSafeRoutingInfo& routing_info,
+      const ModelTypeSet& types_to_download,
+      const ModelSafeRoutingInfo& routing_info,
       KeystoreKeyStatus keystore_key_status,
       const base::Closure& ready_task);
   ~ConfigurationParams();
 
   // Source for the configuration.
   sync_pb::GetUpdatesCallerInfo::GetUpdatesSource source;
   // The types that should be downloaded.
-  syncer::ModelTypeSet types_to_download;
+  ModelTypeSet types_to_download;
   // The new routing info (superset of types to be downloaded).
   ModelSafeRoutingInfo routing_info;
   // Whether we need to perform a GetKey command.
   KeystoreKeyStatus keystore_key_status;
   // Callback to invoke on configuration completion.
   base::Closure ready_task;
 };
 
 class SyncScheduler : public sessions::SyncSession::Delegate {
  public:
@@ skipping 32 matching lines @@
   // allow preempting ongoing sync cycles.
   // Invokes |callback| from the sync loop once syncer is idle and all tasks
   // are cancelled.
   virtual void RequestStop(const base::Closure& callback) = 0;
 
   // The meat and potatoes. Both of these methods will post a delayed task
   // to attempt the actual nudge (see ScheduleNudgeImpl).
   virtual void ScheduleNudgeAsync(
       const base::TimeDelta& delay,
       NudgeSource source,
-      syncer::ModelTypeSet types,
+      ModelTypeSet types,
       const tracked_objects::Location& nudge_location) = 0;
   virtual void ScheduleNudgeWithPayloadsAsync(
       const base::TimeDelta& delay, NudgeSource source,
-      const syncer::ModelTypePayloadMap& types_with_payloads,
+      const ModelTypePayloadMap& types_with_payloads,
       const tracked_objects::Location& nudge_location) = 0;
 
   // Change status of notifications in the SyncSessionContext.
   virtual void SetNotificationsEnabled(bool notifications_enabled) = 0;
 
   virtual base::TimeDelta GetSessionsCommitDelay() const = 0;
 
   // Called when credentials are updated by the user.
   virtual void OnCredentialsUpdated() = 0;
 
   // Called when the network layer detects a connection status change.
   virtual void OnConnectionStatusChange() = 0;
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_ENGINE_SYNC_SCHEDULER_H_