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

sync/engine/process_commit_response_command.cc

 // 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.
 
 #include "sync/engine/process_commit_response_command.h"
 
 #include <cstddef>
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 117 matching lines @@
           ++error_commits;
           break;
         case CommitResponse::CONFLICT:
           ++conflicting_commits;
           conflict_progress->AddServerConflictingItemById(
               commit_set_.GetCommitIdAt(proj[i]));
           break;
         case CommitResponse::SUCCESS:
           // TODO(sync): worry about sync_rate_ rate calc?
           ++successes;
-          if (commit_set_.GetModelTypeAt(proj[i]) == syncer::BOOKMARKS)
+          if (commit_set_.GetModelTypeAt(proj[i]) == BOOKMARKS)
             status->increment_num_successful_bookmark_commits();
           status->increment_num_successful_commits();
           break;
         case CommitResponse::OVER_QUOTA:
           // We handle over quota like a retry, which is same as transient.
         case CommitResponse::RETRY:
         case CommitResponse::TRANSIENT_ERROR:
           ++transient_error_commits;
           break;
         default:
@@ skipping 323 matching lines @@
   // been recursively deleted.
   // TODO(nick): Here, commit_message.deleted() would be more correct than
   // local_entry->Get(IS_DEL).  For example, an item could be renamed, and then
   // deleted during the commit of the rename.  Unit test & fix.
   if (local_entry->Get(IS_DIR) && local_entry->Get(IS_DEL)) {
     deleted_folders->insert(local_entry->Get(ID));
   }
 }
 
 }  // namespace syncer