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

chrome/browser/ui/webui/version_ui.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/ui/webui/version_ui.h"
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 74 matching lines @@
   html_source->AddLocalizedString("user_agent_name",
                                   IDS_ABOUT_VERSION_USER_AGENT);
   html_source->AddString("useragent", content::GetUserAgent(GURL()));
   html_source->AddLocalizedString("command_line_name",
                                   IDS_ABOUT_VERSION_COMMAND_LINE);
 
 #if defined(OS_WIN)
   html_source->AddString("command_line",
       WideToUTF16(CommandLine::ForCurrentProcess()->GetCommandLineString()));
 #elif defined(OS_POSIX)
-  std::string command_line = "";
+  std::string command_line;
   typedef std::vector<std::string> ArgvList;
   const ArgvList& argv = CommandLine::ForCurrentProcess()->argv();
   for (ArgvList::const_iterator iter = argv.begin(); iter != argv.end(); iter++)
     command_line += " " + *iter;
   // TODO(viettrungluu): |command_line| could really have any encoding, whereas
   // below we assumes it's UTF-8.
   html_source->AddString("command_line", command_line);
 #endif
 
   // Note that the executable path and profile path are retrieved asynchronously
@@ skipping 34 matching lines @@
   // Set up the chrome://theme/ source.
   ThemeSource* theme = new ThemeSource(profile);
   content::URLDataSource::Add(profile, theme);
 #endif
 
   content::WebUIDataSource::Add(profile, CreateVersionUIDataSource(profile));
 }
 
 VersionUI::~VersionUI() {
 }