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

chrome/browser/ui/search/instant_browsertest.cc

 // Copyright 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/content_settings/host_content_settings_map.h"
 #include "chrome/browser/history/history_service_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/search/instant_service.h"
 #include "chrome/browser/search/instant_service_factory.h"
 #include "chrome/browser/search_engines/template_url_service.h"
@@ skipping 589 matching lines @@
   // Inititally, the active tab is showing; the overlay is not.
   EXPECT_TRUE(CheckVisibilityIs(active_tab, true));
   EXPECT_TRUE(CheckVisibilityIs(overlay, false));
 
   // Type a query and wait for Instant to show.
   SetOmniboxTextAndWaitForOverlayToShow("query");
   EXPECT_TRUE(CheckVisibilityIs(active_tab, true));
   EXPECT_TRUE(CheckVisibilityIs(overlay, true));
 
   // Deleting the omnibox text should hide the overlay.
-  SetOmniboxText("");
+  SetOmniboxText(std::string());
   EXPECT_TRUE(CheckVisibilityIs(active_tab, true));
   EXPECT_TRUE(CheckVisibilityIs(overlay, false));
 
   // Typing a query should show the overlay again.
   SetOmniboxTextAndWaitForOverlayToShow("query");
   EXPECT_TRUE(CheckVisibilityIs(active_tab, true));
   EXPECT_TRUE(CheckVisibilityIs(overlay, true));
 
   // Commit the overlay.
   browser()->window()->GetLocationBar()->AcceptInput();
@@ skipping 373 matching lines @@
   content::WebContents* active_tab =
       browser()->tab_strip_model()->GetActiveWebContents();
   EXPECT_TRUE(instant_service->IsInstantProcess(
       active_tab->GetRenderProcessHost()->GetID()));
 
   // Navigating away should change the process.
   ui_test_utils::NavigateToURL(browser(), GURL(chrome::kChromeUINewTabURL));
   EXPECT_FALSE(instant_service->IsInstantProcess(
       active_tab->GetRenderProcessHost()->GetID()));
 }