Coverity: Pass parameters by reference.

chrome/browser/sync/glue/bookmark_model_associator.h

 // Copyright (c) 2010 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_GLUE_BOOKMARK_MODEL_ASSOCIATOR_H_
 #define CHROME_BROWSER_SYNC_GLUE_BOOKMARK_MODEL_ASSOCIATOR_H_
 #pragma once
 
 #include <map>
 #include <set>
@@ skipping 43 matching lines @@
 
   virtual bool DisassociateModels();
 
   // The has_nodes out param is true if the sync model has nodes other
   // than the permanent tagged nodes.
   virtual bool SyncModelHasUserCreatedNodes(bool* has_nodes);
 
   // Returns sync id for the given bookmark node id.
   // Returns sync_api::kInvalidId if the sync node is not found for the given
   // bookmark node id.
-  virtual int64 GetSyncIdFromChromeId(int64 node_id);
+  virtual int64 GetSyncIdFromChromeId(const int64& node_id);
 
   // Returns the bookmark node for the given sync id.
   // Returns NULL if no bookmark node is found for the given sync id.
   virtual const BookmarkNode* GetChromeNodeFromSyncId(int64 sync_id);
 
   // Initializes the given sync node from the given bookmark node id.
   // Returns false if no sync node was found for the given bookmark node id or
   // if the initialization of sync node fails.
-  virtual bool InitSyncNodeFromChromeId(int64 node_id,
+  virtual bool InitSyncNodeFromChromeId(const int64& node_id,
                                         sync_api::BaseNode* sync_node);
 
   // Associates the given bookmark node with the given sync id.
   virtual void Associate(const BookmarkNode* node, int64 sync_id);
   // Remove the association that corresponds to the given sync id.
   virtual void Disassociate(int64 sync_id);
 
   virtual void AbortAssociation() {
     // No implementation needed, this associator runs on the main
     // thread.
@@ skipping 50 matching lines @@
   // guarantees no invocations can occur if |this| has been deleted. (This
   // allows this class to be non-refcounted).
   ScopedRunnableMethodFactory<BookmarkModelAssociator> persist_associations_;
 
   DISALLOW_COPY_AND_ASSIGN(BookmarkModelAssociator);
 };
 
 }  // namespace browser_sync
 
 #endif  // CHROME_BROWSER_SYNC_GLUE_BOOKMARK_MODEL_ASSOCIATOR_H_