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

chrome/browser/importer/firefox_importer_utils.cc

 // Copyright (c) 2012 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/importer/firefox_importer_utils.h"
 
 #include <algorithm>
 #include <map>
 #include <string>
 
@@ skipping 237 matching lines @@
     return false;
   }
 
   return true;
 }
 
 std::string ReadBrowserConfigProp(const base::FilePath& app_path,
                                   const std::string& pref_key) {
   std::string content;
   if (!ReadPrefFile(app_path.AppendASCII("browserconfig.properties"), &content))
-    return "";
+    return std::string();
 
   // This file has the syntax: key=value.
   size_t prop_index = content.find(pref_key + "=");
   if (prop_index == std::string::npos)
-    return "";
+    return std::string();
 
   size_t start = prop_index + pref_key.length();
   size_t stop = std::string::npos;
   if (start != std::string::npos)
     stop = content.find("\n", start + 1);
 
   if (start == std::string::npos ||
       stop == std::string::npos || (start == stop)) {
     LOG(WARNING) << "Firefox property " << pref_key << " could not be parsed.";
-    return "";
+    return std::string();
   }
 
   return content.substr(start + 1, stop - start - 1);
 }
 
 std::string ReadPrefsJsValue(const base::FilePath& profile_path,
                              const std::string& pref_key) {
   std::string content;
   if (!ReadPrefFile(profile_path.AppendASCII("prefs.js"), &content))
-    return "";
+    return std::string();
 
   return GetPrefsJsValue(content, pref_key);
 }
 
 GURL GetHomepage(const base::FilePath& profile_path) {
   std::string home_page_list =
       ReadPrefsJsValue(profile_path, "browser.startup.homepage");
 
   size_t seperator = home_page_list.find_first_of('|');
   if (seperator == std::string::npos)
@@ skipping 110 matching lines @@
   size_t stop = std::string::npos;
   if (start != std::string::npos) {
     // Stop at the last ')' on this line.
     stop = content.find("\n", start + 1);
     stop = content.rfind(")", stop);
   }
 
   if (start == std::string::npos || stop == std::string::npos ||
       stop < start) {
     LOG(WARNING) << "Firefox property " << pref_key << " could not be parsed.";
-    return "";
+    return std::string();
   }
 
   // String values have double quotes we don't need to return to the caller.
   if (content[start] == '\"' && content[stop - 1] == '\"') {
     ++start;
     --stop;
   }
 
   return content.substr(start, stop - start);
 }
@@ skipping 34 matching lines @@
         }
       }
     }
   }
 
   StringToLowerASCII(&branding_name);
   if (branding_name.find("iceweasel") != std::string::npos)
     return l10n_util::GetStringUTF16(IDS_IMPORT_FROM_ICEWEASEL);
   return l10n_util::GetStringUTF16(IDS_IMPORT_FROM_FIREFOX);
 }