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

chrome/browser/prefs/proxy_policy_unittest.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 "base/command_line.h"
 #include "base/memory/ref_counted.h"
 #include "chrome/browser/policy/mock_configuration_policy_provider.h"
 #include "chrome/browser/policy/policy_map.h"
 #include "chrome/browser/policy/policy_service_impl.h"
 #include "chrome/browser/prefs/browser_prefs.h"
@@ skipping 50 matching lines @@
     ASSERT_TRUE(dict.GetBypassList(&actual));
     EXPECT_EQ(expected, actual);
   } else {
     EXPECT_FALSE(dict.GetBypassList(&actual));
   }
 }
 
 void assertProxyModeWithoutParams(const ProxyConfigDictionary& dict,
                                   ProxyPrefs::ProxyMode proxy_mode) {
   assertProxyMode(dict, proxy_mode);
-  assertProxyServer(dict, "");
-  assertPacUrl(dict, "");
-  assertBypassList(dict, "");
+  assertProxyServer(dict, std::string());
+  assertPacUrl(dict, std::string());
+  assertBypassList(dict, std::string());
 }
 
 }  // namespace
 
 class ProxyPolicyTest : public testing::Test {
  protected:
   ProxyPolicyTest()
       : command_line_(CommandLine::NO_PROGRAM) {}
 
   virtual void SetUp() OVERRIDE {
@@ skipping 39 matching lines @@
   policy.Set(key::kProxyServer, POLICY_LEVEL_MANDATORY, POLICY_SCOPE_USER,
              Value::CreateStringValue("ghi"));
   provider_.UpdateChromePolicy(policy);
 
   // First verify that command-line options are set correctly when
   // there is no policy in effect.
   scoped_ptr<PrefService> prefs(CreatePrefService(false));
   ProxyConfigDictionary dict(prefs->GetDictionary(prefs::kProxy));
   assertProxyMode(dict, ProxyPrefs::MODE_FIXED_SERVERS);
   assertProxyServer(dict, "789");
-  assertPacUrl(dict, "");
+  assertPacUrl(dict, std::string());
   assertBypassList(dict, "123");
 
   // Try a second time time with the managed PrefStore in place, the
   // manual proxy policy should have removed all traces of the command
   // line and replaced them with the policy versions.
   prefs.reset(CreatePrefService(true));
   ProxyConfigDictionary dict2(prefs->GetDictionary(prefs::kProxy));
   assertProxyMode(dict2, ProxyPrefs::MODE_FIXED_SERVERS);
   assertProxyServer(dict2, "ghi");
-  assertPacUrl(dict2, "");
+  assertPacUrl(dict2, std::string());
   assertBypassList(dict2, "abc");
 }
 
 TEST_F(ProxyPolicyTest, OverridesUnrelatedCommandLineOptions) {
   command_line_.AppendSwitchASCII(switches::kProxyBypassList, "123");
   command_line_.AppendSwitchASCII(switches::kProxyServer, "789");
   Value* mode_name = Value::CreateStringValue(
       ProxyPrefs::kAutoDetectProxyModeName);
   PolicyMap policy;
   policy.Set(key::kProxyMode, POLICY_LEVEL_MANDATORY, POLICY_SCOPE_USER,
              mode_name);
   provider_.UpdateChromePolicy(policy);
 
   // First verify that command-line options are set correctly when
   // there is no policy in effect.
   scoped_ptr<PrefService> prefs(CreatePrefService(false));
   ProxyConfigDictionary dict(prefs->GetDictionary(prefs::kProxy));
   assertProxyMode(dict, ProxyPrefs::MODE_FIXED_SERVERS);
   assertProxyServer(dict, "789");
-  assertPacUrl(dict, "");
+  assertPacUrl(dict, std::string());
   assertBypassList(dict, "123");
 
   // Try a second time time with the managed PrefStore in place, the
   // no proxy policy should have removed all traces of the command
   // line proxy settings, even though they were not the specific one
   // set in policy.
   prefs.reset(CreatePrefService(true));
   ProxyConfigDictionary dict2(prefs->GetDictionary(prefs::kProxy));
   assertProxyModeWithoutParams(dict2, ProxyPrefs::MODE_AUTO_DETECT);
 }
@@ skipping 38 matching lines @@
 
   // Try a second time time with the managed PrefStore in place, the
   // auto-detect should be overridden. The default pref store must be
   // in place with the appropriate default value for this to work.
   prefs.reset(CreatePrefService(true));
   ProxyConfigDictionary dict2(prefs->GetDictionary(prefs::kProxy));
   assertProxyModeWithoutParams(dict2, ProxyPrefs::MODE_DIRECT);
 }
 
 }  // namespace policy