Eliminate BaseSessionServiceDelegateImpl

chrome/browser/sessions/base_session_service_delegate_impl.h

-// Copyright 2014 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.
-
-#ifndef CHROME_BROWSER_SESSIONS_BASE_SESSION_SERVICE_DELEGATE_IMPL_H_
-#define CHROME_BROWSER_SESSIONS_BASE_SESSION_SERVICE_DELEGATE_IMPL_H_
-
-#include "components/sessions/base_session_service_delegate.h"
-
-class BaseSessionServiceDelegateImpl
-    : public sessions::BaseSessionServiceDelegate {
- public:
-  // If |use_delayed_save| is true, save operations can be performed as a
-  // delayed task. Generally |used_delayed_save| should be true, testing may
-  // supply false.
-  explicit BaseSessionServiceDelegateImpl(bool should_use_delayed_save);
-  ~BaseSessionServiceDelegateImpl() override {}
-
-  // BaseSessionServiceDelegate:
-  base::SequencedWorkerPool* GetBlockingPool() override;
-  bool ShouldTrackEntry(const GURL& url) override;
-  bool ShouldUseDelayedSave() override;
-  void OnWillSaveCommands() override {}
-  void OnSavedCommands() override {}
-
- private:
-  // True if save operations can be performed as a delayed task. This can be
-  // disabled for unit tests.
-  const bool should_use_delayed_save_;
-
-  DISALLOW_COPY_AND_ASSIGN(BaseSessionServiceDelegateImpl);
-};
-
-#endif  // CHROME_BROWSER_SESSIONS_BASE_SESSION_SERVICE_DELEGATE_IMPL_H_