Drop |languages| from {Format,Elide}Url* and IDNToUnicode

components/history/core/test/history_backend_db_base_test.cc

 // Copyright 2015 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 "components/history/core/test/history_backend_db_base_test.h"
 
 #include "base/files/file_path.h"
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/stringprintf.h"
@@ skipping 67 matching lines @@
   // Make sure we don't have any event pending that could disrupt the next
   // test.
   base::ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE, base::MessageLoop::QuitWhenIdleClosure());
   base::MessageLoop::current()->Run();
 }
 
 void HistoryBackendDBBaseTest::CreateBackendAndDatabase() {
   backend_ = new HistoryBackend(new BackendDelegate(this), nullptr,
                                 base::ThreadTaskRunnerHandle::Get());
-  backend_->Init(std::string(), false,
+  backend_->Init(false,
                  TestHistoryDatabaseParamsForPath(history_dir_));
   db_ = backend_->db_.get();
   DCHECK(in_mem_backend_) << "Mem backend should have been set by "
       "HistoryBackend::Init";
 }
 
 void HistoryBackendDBBaseTest::CreateBackendAndDatabaseAllowFail() {
   backend_ = new HistoryBackend(new BackendDelegate(this), nullptr,
                                 base::ThreadTaskRunnerHandle::Get());
-  backend_->Init(std::string(), false,
+  backend_->Init(false,
                  TestHistoryDatabaseParamsForPath(history_dir_));
   db_ = backend_->db_.get();
 }
 
 void HistoryBackendDBBaseTest::CreateDBVersion(int version) {
   base::FilePath data_path;
   ASSERT_TRUE(GetTestDataHistoryDir(&data_path));
   data_path =
       data_path.AppendASCII(base::StringPrintf("history.%d.sql", version));
   ASSERT_NO_FATAL_FAILURE(
@@ skipping 33 matching lines @@
                        std::string(),
                        id,
                        guid,
                        false,
                        "by_ext_id",
                        "by_ext_name");
   return db_->CreateDownload(download);
 }
 
 }  // namespace history