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

chrome/browser/browsing_data/cookies_tree_model_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/browsing_data/cookies_tree_model.h"
 
 #include <string>
 
 #include "base/message_loop.h"
 #include "base/prefs/pref_service.h"
@@ skipping 398 matching lines @@
 
   // Make sure the nodes are also deleted from the model's cache.
   // http://crbug.com/43249
   cookies_model->UpdateSearchResults(string16());
 
   {
     // 2 nodes - root and app
     SCOPED_TRACE("After removing");
     EXPECT_EQ(1, cookies_model->GetRoot()->GetTotalNodeCount());
     EXPECT_EQ(0, cookies_model->GetRoot()->child_count());
-    EXPECT_EQ(std::string(""), GetDisplayedCookies(cookies_model.get()));
+    EXPECT_EQ(std::string(), GetDisplayedCookies(cookies_model.get()));
     EXPECT_TRUE(mock_browsing_data_cookie_helper_->AllDeleted());
     EXPECT_TRUE(mock_browsing_data_database_helper_->AllDeleted());
     EXPECT_TRUE(mock_browsing_data_local_storage_helper_->AllDeleted());
     EXPECT_FALSE(mock_browsing_data_session_storage_helper_->AllDeleted());
     EXPECT_TRUE(mock_browsing_data_indexed_db_helper_->AllDeleted());
     EXPECT_TRUE(mock_browsing_data_file_system_helper_->AllDeleted());
     EXPECT_TRUE(mock_browsing_data_server_bound_cert_helper_->AllDeleted());
     EXPECT_TRUE(mock_browsing_data_flash_lso_helper_->AllDeleted());
   }
 }
@@ skipping 762 matching lines @@
   EXPECT_EQ("A,C", GetDisplayedCookies(&cookies_model));
 
   cookies_model.UpdateSearchResults(string16(ASCIIToUTF16("foo3")));
   EXPECT_EQ("D", GetDisplayedCookies(&cookies_model));
 
   cookies_model.UpdateSearchResults(string16());
   EXPECT_EQ("A,B,C,D", GetDisplayedCookies(&cookies_model));
 }
 
 }  // namespace