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

chrome/browser/extensions/api/declarative/rules_registry_with_cache_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 "chrome/browser/extensions/api/declarative/test_rules_registry.h"
 
 // Here we test the TestRulesRegistry which is the simplest possible
 // implementation of RulesRegistryWithCache as a proxy for
 // RulesRegistryWithCache.
 
@@ skipping 51 matching lines @@
   content::TestBrowserThread ui_;
   scoped_refptr<TestRulesRegistry> registry_;
 };
 
 TEST_F(RulesRegistryWithCacheTest, AddRules) {
   // Check that nothing happens if the concrete RulesRegistry refuses to insert
   // the rules.
   registry_->SetResult("Error");
   EXPECT_EQ("Error", AddRule(extension_id, rule_id));
   EXPECT_EQ(0, GetNumberOfRules(extension_id));
-  registry_->SetResult("");
+  registry_->SetResult(std::string());
 
   // Check that rules can be inserted.
   EXPECT_EQ("", AddRule(extension_id, rule_id));
   EXPECT_EQ(1, GetNumberOfRules(extension_id));
 
   // Check that rules cannot be inserted twice with the same rule_id.
   EXPECT_NE("", AddRule(extension_id, rule_id));
   EXPECT_EQ(1, GetNumberOfRules(extension_id));
 
   // Check that different extensions may use the same rule_id.
   EXPECT_EQ("", AddRule(extension2_id, rule_id));
   EXPECT_EQ(1, GetNumberOfRules(extension_id));
   EXPECT_EQ(1, GetNumberOfRules(extension2_id));
 }
 
 TEST_F(RulesRegistryWithCacheTest, RemoveRules) {
   // Prime registry.
   EXPECT_EQ("", AddRule(extension_id, rule_id));
   EXPECT_EQ("", AddRule(extension2_id, rule_id));
   EXPECT_EQ(1, GetNumberOfRules(extension_id));
   EXPECT_EQ(1, GetNumberOfRules(extension2_id));
 
   // Check that nothing happens if the concrete RuleRegistry refuses to remove
   // the rules.
   registry_->SetResult("Error");
   EXPECT_EQ("Error", RemoveRule(extension_id, rule_id));
   EXPECT_EQ(1, GetNumberOfRules(extension_id));
-  registry_->SetResult("");
+  registry_->SetResult(std::string());
 
   // Check that nothing happens if a rule does not exist.
   EXPECT_EQ("", RemoveRule(extension_id, "unknown_rule"));
   EXPECT_EQ(1, GetNumberOfRules(extension_id));
 
   // Check that rules may be removed and only for the correct extension.
   EXPECT_EQ("", RemoveRule(extension_id, rule_id));
   EXPECT_EQ(0, GetNumberOfRules(extension_id));
   EXPECT_EQ(1, GetNumberOfRules(extension2_id));
 }
 
 TEST_F(RulesRegistryWithCacheTest, RemoveAllRules) {
   // Prime registry.
   EXPECT_EQ("", AddRule(extension_id, rule_id));
   EXPECT_EQ("", AddRule(extension_id, rule2_id));
   EXPECT_EQ("", AddRule(extension2_id, rule_id));
   EXPECT_EQ(2, GetNumberOfRules(extension_id));
   EXPECT_EQ(1, GetNumberOfRules(extension2_id));
 
   // Check that nothing happens if the concrete RuleRegistry refuses to remove
   // the rules.
   registry_->SetResult("Error");
   EXPECT_EQ("Error", registry_->RemoveAllRules(extension_id));
   EXPECT_EQ(2, GetNumberOfRules(extension_id));
-  registry_->SetResult("");
+  registry_->SetResult(std::string());
 
   // Check that rules may be removed and only for the correct extension.
   EXPECT_EQ("", registry_->RemoveAllRules(extension_id));
   EXPECT_EQ(0, GetNumberOfRules(extension_id));
   EXPECT_EQ(1, GetNumberOfRules(extension2_id));
 }
 
 TEST_F(RulesRegistryWithCacheTest, GetRules) {
   // Prime registry.
   EXPECT_EQ("", AddRule(extension_id, rule_id));
@@ skipping 34 matching lines @@
   EXPECT_EQ("", AddRule(extension_id, rule_id));
   EXPECT_EQ("", AddRule(extension2_id, rule_id));
 
   // Check that the correct rules are removed.
   registry_->OnExtensionUnloaded(extension_id);
   EXPECT_EQ(0, GetNumberOfRules(extension_id));
   EXPECT_EQ(1, GetNumberOfRules(extension2_id));
 }
 
 }  //  namespace extensions