Rewrite std::string("") to std::string(), Linux edition.

chrome/common/net/x509_certificate_model.cc

 // Copyright (c) 2011 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/common/net/x509_certificate_model.h"
 
 #include <unicode/uidna.h>
 
 #include "base/utf_string_conversions.h"
 #include "grit/generated_resources.h"
@@ skipping 43 matching lines @@
                                           char hex_separator,
                                           char line_separator) {
   static const char kHexChars[] = "0123456789ABCDEF";
 
   // Each input byte creates two output hex characters + a space or newline,
   // except for the last byte.
   std::string ret;
   size_t kMin = 0U;
 
   if (!data_length)
-    return "";
+    return std::string();
 
   ret.reserve(std::max(kMin, data_length * 3 - 1));
 
   for (size_t i = 0; i < data_length; ++i) {
     unsigned char b = data[i];
     ret.push_back(kHexChars[(b >> 4) & 0xf]);
     ret.push_back(kHexChars[b & 0xf]);
     if (i + 1 < data_length) {
       if ((i + 1) % 16 == 0)
         ret.push_back(line_separator);
       else
         ret.push_back(hex_separator);
     }
   }
   return ret;
 }
 
 std::string ProcessRawBytes(const unsigned char* data, size_t data_length) {
   return ProcessRawBytesWithSeparators(data, data_length, ' ', '\n');
 }
 
 #if defined(USE_NSS)
 std::string ProcessRawBits(const unsigned char* data, size_t data_length) {
   return ProcessRawBytes(data, (data_length + 7) / 8);
 }
 #endif  // USE_NSS
 
 }  // x509_certificate_model