2 files changed, 4 insertions, 4 deletions
diff --git a/chrome/browser/webdata/autofill_change.cc b/chrome/browser/webdata/autofill_change.cc
index 454d7b9..e6bb085 100644
--- a/chrome/browser/webdata/autofill_change.cc
+++ b/chrome/browser/webdata/autofill_change.cc
@@ -15,7 +15,7 @@ AutofillChange::~AutofillChange() {
 }
 
 AutofillProfileChange::AutofillProfileChange(
-  Type type, std::string key, const AutofillProfile* profile)
+  Type type, const std::string& key, const AutofillProfile* profile)
     : GenericAutofillChange<std::string>(type, key),
       profile_(profile) {
   DCHECK(type == ADD ? (profile && profile->guid() == key) : true);
@@ -34,7 +34,7 @@ bool AutofillProfileChange::operator==(
 }
 
 AutofillCreditCardChange::AutofillCreditCardChange(
-  Type type, std::string key, const CreditCard* credit_card)
+  Type type, const std::string& key, const CreditCard* credit_card)
     : GenericAutofillChange<std::string>(type, key), credit_card_(credit_card) {
   DCHECK(type == ADD ? (credit_card && credit_card->guid() == key) : true);
   DCHECK(type == UPDATE ? (credit_card && credit_card->guid() == key) : true);
diff --git a/chrome/browser/webdata/autofill_change.h b/chrome/browser/webdata/autofill_change.h
index 297a6a7..079a94a 100644
--- a/chrome/browser/webdata/autofill_change.h
+++ b/chrome/browser/webdata/autofill_change.h
@@ -54,7 +54,7 @@ class AutofillProfileChange : public GenericAutofillChange<std::string> {
   // When |type| == UPDATE, |profile| should be non-NULL.
   // When |type| == REMOVE, |profile| should be NULL.
   AutofillProfileChange(Type type,
-                        std::string key,
+                        const std::string& key,
                         const AutofillProfile* profile);
   virtual ~AutofillProfileChange();
 
@@ -75,7 +75,7 @@ class AutofillCreditCardChange : public GenericAutofillChange<std::string> {
   // When |type| == UPDATE, |credit_card| should be non-NULL.
   // When |type| == REMOVE, |credit_card| should be NULL.
   AutofillCreditCardChange(Type type,
-                           std::string key,
+                           const std::string& key,
                            const CreditCard* credit_card);
   virtual ~AutofillCreditCardChange();