Really fix build after r193020.

chrome/browser/file_select_helper.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/file_select_helper.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/file_util.h"
@@ skipping 408 matching lines @@
 #endif
 
   select_file_dialog_->SelectFile(
       dialog_type_,
       params.title,
       default_file_name,
       select_file_types_.get(),
       select_file_types_.get() && !select_file_types_->extensions.empty()
           ? 1
           : 0,  // 1-based index of default extension to show.
-      FILE_PATH_LITERAL(std::string()),
+      base::FilePath::StringType(),
       owning_window,
 #if defined(OS_ANDROID)
       &accept_types);
 #else
       NULL);
 #endif
 
   select_file_types_.reset();
 }
 
@@ skipping 54 matching lines @@
   // A 1 character accept type will always be invalid (either a "." in the case
   // of an extension or a "/" in the case of a MIME type).
   std::string unused;
   if (accept_type.length() <= 1 ||
       StringToLowerASCII(accept_type) != accept_type ||
       TrimWhitespaceASCII(accept_type, TRIM_ALL, &unused) != TRIM_NONE) {
     return false;
   }
   return true;
 }