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

chrome/browser/sync/glue/sync_backend_host_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/sync/glue/sync_backend_host.h"
 
 #include <cstddef>
 
 #include "base/location.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 176 matching lines @@
     // Pump any messages posted by the IO thread.
     ui_loop_.RunUntilIdle();
   }
 
   // Synchronously initializes the backend.
   void InitializeBackend(bool expect_success) {
     EXPECT_CALL(mock_frontend_, OnBackendInitialized(_, _, expect_success)).
         WillOnce(InvokeWithoutArgs(QuitMessageLoop));
     backend_->Initialize(&mock_frontend_,
                          syncer::WeakHandle<syncer::JsEventHandler>(),
-                         GURL(""),
+                         GURL(std::string()),
                          credentials_,
                          true,
                          &fake_manager_factory_,
                          &handler_,
                          NULL);
     ui_loop_.PostDelayedTask(FROM_HERE,
         ui_loop_.QuitClosure(), TestTimeouts::action_timeout());
     ui_loop_.Run();
     // |fake_manager_factory_|'s fake_manager() is set on the sync
     // thread, but we can rely on the message loop barriers to
@@ skipping 536 matching lines @@
   fake_manager_->WaitForSyncThread();
   EXPECT_FALSE(types.Equals(fake_manager_->GetLastRefreshRequestTypes()));
 
   backend_->Shutdown(false);
   backend_.reset();
 }
 
 }  // namespace
 
 }  // namespace browser_sync