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

content/browser/download/save_file.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/save_file.h"
 
 #include "base/logging.h"
 #include "content/public/browser/browser_thread.h"
 #include "net/base/file_stream.h"
 
 namespace content {
 
 // TODO(asanka): SaveFile should use the target directory of the save package as
 //               the default download directory when initializing |file_|.
 //               Unfortunately, as it is, constructors of SaveFile don't always
 //               have access to the SavePackage at this point.
 SaveFile::SaveFile(const SaveFileCreateInfo* info, bool calculate_hash)
     : file_(base::FilePath(),
             info->url,
             GURL(),
             0,
             calculate_hash,
-            "",
+            std::string(),
             scoped_ptr<net::FileStream>(),
             net::BoundNetLog()),
       info_(info) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
 
   DCHECK(info);
   DCHECK(info->path.empty());
 }
 
 SaveFile::~SaveFile() {
@@ skipping 43 matching lines @@
 
 bool SaveFile::GetHash(std::string* hash) {
   return file_.GetHash(hash);
 }
 
 std::string SaveFile::DebugString() const {
   return file_.DebugString();
 }
 
 }  // namespace content