Coverity: Pass parameters by reference.

chrome/browser/sync/glue/typed_url_model_associator.h

Index: chrome/browser/sync/glue/typed_url_model_associator.h
diff --git a/chrome/browser/sync/glue/typed_url_model_associator.h b/chrome/browser/sync/glue/typed_url_model_associator.h
index a07bae91d05903065eb7044fd9faa44a42a00cfc..ca875c9b8ea8d088a6eb83226f172925f697ba3f 100644
--- a/chrome/browser/sync/glue/typed_url_model_associator.h
+++ b/chrome/browser/sync/glue/typed_url_model_associator.h
@@ -84,14 +84,14 @@ class TypedUrlModelAssociator
   }
 
   // Not implemented.
-  virtual bool InitSyncNodeFromChromeId(std::string node_id,
+  virtual bool InitSyncNodeFromChromeId(const std::string& node_id,
                                         sync_api::BaseNode* sync_node) {
     return false;
   }
 
   // Returns the sync id for the given typed_url name, or sync_api::kInvalidId
   // if the typed_url name is not associated to any sync id.
-  virtual int64 GetSyncIdFromChromeId(std::string node_id);
+  virtual int64 GetSyncIdFromChromeId(const std::string& node_id);
 
   // Associates the given typed_url name with the given sync id.
   virtual void Associate(const std::string* node, int64 sync_id);