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

content/browser/download/download_stats.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 "content/browser/download/download_stats.h"
 
 #include "base/metrics/histogram.h"
 #include "base/string_util.h"
 #include "content/browser/download/download_resource_handler.h"
 #include "content/public/browser/download_interrupt_reasons.h"
@@ skipping 287 matching lines @@
   // Record the value.
   UMA_HISTOGRAM_ENUMERATION("Download.ContentType",
                             download_content,
                             DOWNLOAD_CONTENT_MAX);
 }
 
 void RecordDownloadContentDisposition(
     const std::string& content_disposition_string) {
   if (content_disposition_string.empty())
     return;
-  net::HttpContentDisposition content_disposition(
-      content_disposition_string, "");
+  net::HttpContentDisposition content_disposition(content_disposition_string,
+                                                  std::string());
   int result = content_disposition.parse_result_flags();
 
   bool is_valid = !content_disposition.filename().empty();
   RecordContentDispositionCount(CONTENT_DISPOSITION_HEADER_PRESENT, true);
   RecordContentDispositionCount(CONTENT_DISPOSITION_IS_VALID, is_valid);
   if (!is_valid)
     return;
 
   RecordContentDispositionCountFlag(
       CONTENT_DISPOSITION_HAS_DISPOSITION_TYPE, result,
@@ skipping 108 matching lines @@
                            disk_write_time_ms * 100 / elapsed_time_ms);
 }
 
 void RecordSavePackageEvent(SavePackageEvent event) {
   UMA_HISTOGRAM_ENUMERATION("Download.SavePackage",
                             event,
                             SAVE_PACKAGE_LAST_ENTRY);
 }
 
 }  // namespace content