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

chrome/browser/about_flags_unittest.cc

 // Copyright (c) 2011 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/prefs/pref_registry_simple.h"
 #include "base/prefs/testing_pref_service.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/about_flags.h"
@@ skipping 267 matching lines @@
   // Enable experiments 1 and 2.
   SetExperimentEnabled(&prefs_, kFlags1, true);
   SetExperimentEnabled(&prefs_, kFlags2, true);
   CommandLine command_line(CommandLine::NO_PROGRAM);
   EXPECT_FALSE(command_line.HasSwitch(kSwitch1));
   EXPECT_FALSE(command_line.HasSwitch(kSwitch2));
 
   // Convert the flags to switches.
   ConvertFlagsToSwitches(&prefs_, &command_line);
   EXPECT_TRUE(command_line.HasSwitch(kSwitch1));
-  EXPECT_EQ(std::string(""), command_line.GetSwitchValueASCII(kSwitch1));
+  EXPECT_EQ(std::string(), command_line.GetSwitchValueASCII(kSwitch1));
   EXPECT_TRUE(command_line.HasSwitch(kSwitch2));
   EXPECT_EQ(std::string(kValueForSwitch2),
             command_line.GetSwitchValueASCII(kSwitch2));
 
   // Confirm that there is no '=' in the command line for simple switches.
   std::string switch1_with_equals = std::string("--") +
                                     std::string(kSwitch1) +
                                     std::string("=");
 #if defined(OS_WIN)
   EXPECT_EQ(std::wstring::npos,
@@ skipping 105 matching lines @@
   testing::SetExperiments(NULL, 0);
   size_t count;
   const Experiment* experiments = testing::GetExperiments(&count);
     for (size_t i = 0; i < count; ++i) {
     std::string name = experiments->internal_name;
     EXPECT_EQ(std::string::npos, name.find(testing::kMultiSeparator)) << i;
   }
 }
 
 }  // namespace about_flags