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

sync/api/fake_syncable_service.h

Index: sync/api/fake_syncable_service.h
diff --git a/sync/api/fake_syncable_service.h b/sync/api/fake_syncable_service.h
index 483325ac4789bb419c767d18bea42b2cc42737dd..5a501aec14a5b140ce772eddc31eb8c2c97b6e2e 100644
--- a/sync/api/fake_syncable_service.h
+++ b/sync/api/fake_syncable_service.h
@@ -28,12 +28,12 @@ class FakeSyncableService : public SyncableService {
 
   // SyncableService implementation.
   virtual SyncError MergeDataAndStartSyncing(
-      syncer::ModelType type,
+      ModelType type,
       const SyncDataList& initial_sync_data,
       scoped_ptr<SyncChangeProcessor> sync_processor,
       scoped_ptr<SyncErrorFactory> sync_error_factory) OVERRIDE;
-  virtual void StopSyncing(syncer::ModelType type) OVERRIDE;
-  virtual SyncDataList GetAllSyncData(syncer::ModelType type) const OVERRIDE;
+  virtual void StopSyncing(ModelType type) OVERRIDE;
+  virtual SyncDataList GetAllSyncData(ModelType type) const OVERRIDE;
   virtual SyncError ProcessSyncChanges(
       const tracked_objects::Location& from_here,
       const SyncChangeList& change_list) OVERRIDE;
@@ -43,7 +43,7 @@ class FakeSyncableService : public SyncableService {
   SyncError merge_data_and_start_syncing_error_;
   SyncError process_sync_changes_error_;
   bool syncing_;
-  syncer::ModelType type_;
+  ModelType type_;
 };
 
 }  // namespace syncer