Remove all uses of EmptyString16(), EmptyWString(), and EmptyGURL(), and thei...

chrome/browser/autofill/credit_card.cc

 // 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.
 
 #include "chrome/browser/autofill/credit_card.h"
 
 #include "base/basictypes.h"
 #include "base/string_util.h"
 #include "chrome/browser/autofill/autofill_type.h"
 #include "chrome/browser/autofill/field_types.h"
@@ skipping 95 matching lines @@
       return Expiration2DigitYearAsString();
 
     case CREDIT_CARD_EXP_4_DIGIT_YEAR:
       return Expiration4DigitYearAsString();
 
     case CREDIT_CARD_EXP_DATE_2_DIGIT_YEAR: {
       string16 month = ExpirationMonthAsString();
       string16 year = Expiration2DigitYearAsString();
       if (!month.empty() && !year.empty())
         return month + ASCIIToUTF16("/") + year;
-      return EmptyString16();
+      return string16();
     }
 
     case CREDIT_CARD_EXP_DATE_4_DIGIT_YEAR: {
       string16 month = ExpirationMonthAsString();
       string16 year = Expiration4DigitYearAsString();
       if (!month.empty() && !year.empty())
         return month + ASCIIToUTF16("/") + year;
-      return EmptyString16();
+      return string16();
     }
 
     case CREDIT_CARD_TYPE:
       return this->type();
 
     case CREDIT_CARD_NUMBER:
       return number();
 
     case CREDIT_CARD_VERIFICATION_CODE:
       return verification_code();
 
     default:
       // ComputeDataPresentForArray will hit this repeatedly.
-      return EmptyString16();
+      return string16();
   }
 }
 
 string16 CreditCard::GetPreviewText(const AutoFillType& type) const {
   switch (type.field_type()) {
     case CREDIT_CARD_NUMBER:
       return last_four_digits();
 
     case CREDIT_CARD_VERIFICATION_CODE:
       return ASCIIToUTF16("xxx");
@@ skipping 30 matching lines @@
       break;
 
     default:
       DLOG(ERROR) << "Attempting to set unknown info-type";
       break;
   }
 }
 
 string16 CreditCard::ExpirationMonthAsString() const {
   if (expiration_month_ == 0)
-    return EmptyString16();
+    return string16();
 
   string16 month = IntToString16(expiration_month_);
   if (expiration_month_ >= 10)
     return month;
 
   string16 zero = ASCIIToUTF16("0");
   zero.append(month);
   return zero;
 }
 
 string16 CreditCard::Expiration4DigitYearAsString() const {
   if (expiration_year_ == 0)
-    return EmptyString16();
+    return string16();
 
   return IntToString16(Expiration4DigitYear());
 }
 
 string16 CreditCard::Expiration2DigitYearAsString() const {
   if (expiration_year_ == 0)
-    return EmptyString16();
+    return string16();
 
   return IntToString16(Expiration2DigitYear());
 }
 
 void CreditCard::SetExpirationMonthFromString(const string16& text) {
   int month;
   if (!ConvertDate(text, &month))
     return;
 
   set_expiration_month(month);
@@ skipping 168 matching lines @@
     DCHECK(converted);
     if (!converted)
       return false;
   } else {
     // Clear the value.
     *num = 0;
   }
 
   return true;
 }