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

chrome/browser/extensions/api/proxy/proxy_api_helpers_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.
 
 // Unit tests for helper functions for the Chrome Extensions Proxy Settings API.
 
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
 #include "chrome/browser/extensions/api/proxy/proxy_api_constants.h"
 #include "chrome/browser/extensions/api/proxy/proxy_api_helpers.h"
@@ skipping 204 matching lines @@
                                      &bad_message));
   EXPECT_EQ("host1,host2", out);
   EXPECT_EQ(std::string(), error);
   EXPECT_FALSE(bad_message);
 }
 
 TEST(ExtensionProxyApiHelpers, CreateProxyConfigDict) {
   std::string error;
   scoped_ptr<DictionaryValue> exp_direct(ProxyConfigDictionary::CreateDirect());
   scoped_ptr<DictionaryValue> out_direct(
-      CreateProxyConfigDict(ProxyPrefs::MODE_DIRECT, false, "", "", "", "",
+      CreateProxyConfigDict(ProxyPrefs::MODE_DIRECT,
+                            false,
+                            std::string(),
+                            std::string(),
+                            std::string(),
+                            std::string(),
                             &error));
   EXPECT_TRUE(Value::Equals(exp_direct.get(), out_direct.get()));
 
   scoped_ptr<DictionaryValue> exp_auto(
       ProxyConfigDictionary::CreateAutoDetect());
   scoped_ptr<DictionaryValue> out_auto(
-      CreateProxyConfigDict(ProxyPrefs::MODE_AUTO_DETECT, false, "", "", "", "",
+      CreateProxyConfigDict(ProxyPrefs::MODE_AUTO_DETECT,
+                            false,
+                            std::string(),
+                            std::string(),
+                            std::string(),
+                            std::string(),
                             &error));
   EXPECT_TRUE(Value::Equals(exp_auto.get(), out_auto.get()));
 
   scoped_ptr<DictionaryValue> exp_pac_url(
       ProxyConfigDictionary::CreatePacScript(kSamplePacScriptUrl, false));
   scoped_ptr<DictionaryValue> out_pac_url(
-        CreateProxyConfigDict(ProxyPrefs::MODE_PAC_SCRIPT, false,
-                              kSamplePacScriptUrl, "", "", "", &error));
+      CreateProxyConfigDict(ProxyPrefs::MODE_PAC_SCRIPT,
+                            false,
+                            kSamplePacScriptUrl,
+                            std::string(),
+                            std::string(),
+                            std::string(),
+                            &error));
   EXPECT_TRUE(Value::Equals(exp_pac_url.get(), out_pac_url.get()));
 
   scoped_ptr<DictionaryValue> exp_pac_data(
       ProxyConfigDictionary::CreatePacScript(kSamplePacScriptAsDataUrl, false));
   scoped_ptr<DictionaryValue> out_pac_data(
-          CreateProxyConfigDict(ProxyPrefs::MODE_PAC_SCRIPT, false, "",
-                                kSamplePacScript, "", "", &error));
+      CreateProxyConfigDict(ProxyPrefs::MODE_PAC_SCRIPT,
+                            false,
+                            std::string(),
+                            kSamplePacScript,
+                            std::string(),
+                            std::string(),
+                            &error));
   EXPECT_TRUE(Value::Equals(exp_pac_data.get(), out_pac_data.get()));
 
   scoped_ptr<DictionaryValue> exp_fixed(
       ProxyConfigDictionary::CreateFixedServers("foo:80", "localhost"));
   scoped_ptr<DictionaryValue> out_fixed(
-          CreateProxyConfigDict(ProxyPrefs::MODE_FIXED_SERVERS, false, "", "",
-                                "foo:80", "localhost", &error));
+      CreateProxyConfigDict(ProxyPrefs::MODE_FIXED_SERVERS,
+                            false,
+                            std::string(),
+                            std::string(),
+                            "foo:80",
+                            "localhost",
+                            &error));
   EXPECT_TRUE(Value::Equals(exp_fixed.get(), out_fixed.get()));
 
   scoped_ptr<DictionaryValue> exp_system(ProxyConfigDictionary::CreateSystem());
   scoped_ptr<DictionaryValue> out_system(
-      CreateProxyConfigDict(ProxyPrefs::MODE_SYSTEM, false, "", "", "", "",
+      CreateProxyConfigDict(ProxyPrefs::MODE_SYSTEM,
+                            false,
+                            std::string(),
+                            std::string(),
+                            std::string(),
+                            std::string(),
                             &error));
   EXPECT_TRUE(Value::Equals(exp_system.get(), out_system.get()));
 
   // Neither of them should have set an error.
   EXPECT_EQ(std::string(), error);
 }
 
 TEST(ExtensionProxyApiHelpers, GetProxyServer) {
   DictionaryValue proxy_server_dict;
   net::ProxyServer created;
@@ skipping 120 matching lines @@
   expected.Append(Value::CreateStringValue("s1"));
   expected.Append(Value::CreateStringValue("s2"));
   expected.Append(Value::CreateStringValue("s3"));
 
   scoped_ptr<ListValue> out(TokenizeToStringList("s1;s2;s3", ";"));
   EXPECT_TRUE(Value::Equals(&expected, out.get()));
 }
 
 }  // namespace proxy_api_helpers
 }  // namespace extensions