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

chrome/browser/extensions/api/declarative_content/declarative_content_apitest.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/extension_action.h"
 #include "chrome/browser/extensions/extension_action_manager.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/extensions/extension_tab_util.h"
 #include "chrome/browser/extensions/extension_test_message_listener.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
@@ skipping 38 matching lines @@
 
   // Make sure leaving a matching page unshows the page action.
   NavigateInRenderer(tab, GURL("http://not_checked/"));
   EXPECT_FALSE(page_action->GetIsVisible(tab_id));
 
   // Insert a password field to make sure that's noticed.
   ASSERT_TRUE(content::ExecuteScript(
       tab, "document.body.innerHTML = '<input type=\"password\">';"));
   // Give the mutation observer a chance to run and send back the
   // matching-selector update.
-  ASSERT_TRUE(content::ExecuteScript(tab, ""));
+  ASSERT_TRUE(content::ExecuteScript(tab, std::string()));
   EXPECT_TRUE(page_action->GetIsVisible(tab_id));
 
   // Remove it again to make sure that reverts the action.
   ASSERT_TRUE(content::ExecuteScript(
       tab, "document.body.innerHTML = 'Hello world';"));
   // Give the mutation observer a chance to run and send back the
   // matching-selector update.
-  ASSERT_TRUE(content::ExecuteScript(tab, ""));
+  ASSERT_TRUE(content::ExecuteScript(tab, std::string()));
   EXPECT_FALSE(page_action->GetIsVisible(tab_id));
 }
 
 }  // namespace
 }  // namespace extensions