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

base/file_util_posix.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 "base/file_util.h"
 
 #include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <fnmatch.h>
@@ skipping 523 matching lines @@
     // time. Check to see if it exists and make sure it is a directory.
     if (!DirectoryExists(*i))
       return false;
   }
   return true;
 }
 
 base::FilePath MakeUniqueDirectory(const base::FilePath& path) {
   const int kMaxAttempts = 20;
   for (int attempts = 0; attempts < kMaxAttempts; attempts++) {
-    int uniquifier = GetUniquePathNumber(path, FILE_PATH_LITERAL(""));
+    int uniquifier =
+        GetUniquePathNumber(path, base::FilePath::StringType());
     if (uniquifier < 0)
       break;
     base::FilePath test_path = (uniquifier == 0) ? path :
         path.InsertBeforeExtensionASCII(
             base::StringPrintf(" (%d)", uniquifier));
     if (mkdir(test_path.value().c_str(), 0777) == 0)
       return test_path;
     else if (errno != EEXIST)
       break;
   }
@@ skipping 500 matching lines @@
       kFileSystemRoot, path, kRootUid, allowed_group_ids);
 }
 #endif  // defined(OS_MACOSX) && !defined(OS_IOS)
 
 int GetMaximumPathComponentLength(const FilePath& path) {
   base::ThreadRestrictions::AssertIOAllowed();
   return pathconf(path.value().c_str(), _PC_NAME_MAX);
 }
 
 }  // namespace file_util