Coverity: Pass parameters by reference.

chrome/browser/sync/profile_sync_service_harness.cc

 // Copyright (c) 2011 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 "chrome/browser/sync/profile_sync_service_harness.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/message_loop.h"
@@ skipping 562 matching lines @@
              "Client " << id_;
 }
 
 std::string ProfileSyncServiceHarness::GetUpdatedTimestamp(
     syncable::ModelType model_type) {
   const SyncSessionSnapshot* snap = GetLastSessionSnapshot();
   DCHECK(snap != NULL) << "GetUpdatedTimestamp(): Sync snapshot is NULL.";
   return snap->download_progress_markers[model_type];
 }
 
-void ProfileSyncServiceHarness::LogClientInfo(std::string message) {
+void ProfileSyncServiceHarness::LogClientInfo(const std::string& message) {
   if (service()) {
     const SyncSessionSnapshot* snap = GetLastSessionSnapshot();
     if (snap) {
       VLOG(1) << "Client " << id_ << ": " << message
               << ": num_updates_downloaded : "
               << snap->syncer_status.num_updates_downloaded_total
               << ", has_more_to_sync: " << snap->has_more_to_sync
               << ", unsynced_count: " << snap->unsynced_count
               << ", num_conflicting_updates: " << snap->num_conflicting_updates
               << ", has_unsynced_items: "
@@ skipping 38 matching lines @@
 }
 
 bool ProfileSyncServiceHarness::IsTypeEncrypted(syncable::ModelType type) {
   syncable::ModelTypeSet encrypted_types;
   service_->GetEncryptedDataTypes(&encrypted_types);
   if (encrypted_types.count(type) == 0) {
     return false;
   }
   return true;
 }