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

chrome/browser/extensions/extension_process_manager.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_process_manager.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
@@ skipping 45 matching lines @@
 using extensions::BackgroundManifestHandler;
 using extensions::Extension;
 using extensions::ExtensionHost;
 
 namespace {
 
 std::string GetExtensionID(RenderViewHost* render_view_host) {
   // This works for both apps and extensions because the site has been
   // normalized to the extension URL for apps.
   if (!render_view_host->GetSiteInstance())
-    return "";
+    return std::string();
 
   return render_view_host->GetSiteInstance()->GetSiteURL().host();
 }
 
 // Incognito profiles use this process manager. It is mostly a shim that decides
 // whether to fall back on the original profile's ExtensionProcessManager based
 // on whether a given extension uses "split" or "spanning" incognito behavior.
 class IncognitoExtensionProcessManager : public ExtensionProcessManager {
  public:
   explicit IncognitoExtensionProcessManager(Profile* profile);
@@ skipping 832 matching lines @@
         if (service && service->is_ready())
           CreateBackgroundHostsForProfileStartup();
       }
       break;
     }
     default:
       ExtensionProcessManager::Observe(type, source, details);
       break;
   }
 }