Code cleanup: Pass vector by const-ref rather than by value.

components/autofill/core/browser/personal_data_manager.h

 // Copyright 2013 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 COMPONENTS_AUTOFILL_CORE_BROWSER_PERSONAL_DATA_MANAGER_H_
 #define COMPONENTS_AUTOFILL_CORE_BROWSER_PERSONAL_DATA_MANAGER_H_
 
 #include <set>
 #include <vector>
 
@@ skipping 123 matching lines @@
   virtual const std::vector<CreditCard*>& GetCreditCards() const;
 
   // Loads profiles that can suggest data for |type|. |field_contents| is the
   // part the user has already typed. |field_is_autofilled| is true if the field
   // has already been autofilled. |other_field_types| represents the rest of
   // form. Identifying info is loaded into the last four outparams.
   void GetProfileSuggestions(
       const AutofillType& type,
       const base::string16& field_contents,
       bool field_is_autofilled,
-      std::vector<ServerFieldType> other_field_types,
+      const std::vector<ServerFieldType>& other_field_types,
       std::vector<base::string16>* values,
       std::vector<base::string16>* labels,
       std::vector<base::string16>* icons,
       std::vector<GUIDPair>* guid_pairs);
 
   // Gets credit cards that can suggest data for |type|. See
   // GetProfileSuggestions for argument descriptions. The variant in each
   // GUID pair should be ignored.
   void GetCreditCardSuggestions(
       const AutofillType& type,
@@ skipping 166 matching lines @@
 
   // Whether we have already logged the number of profiles this session.
   mutable bool has_logged_profile_count_;
 
   DISALLOW_COPY_AND_ASSIGN(PersonalDataManager);
 };
 
 }  // namespace autofill
 
 #endif  // COMPONENTS_AUTOFILL_CORE_BROWSER_PERSONAL_DATA_MANAGER_H_