Delete the non-static CLD data source logic.

components/translate/content/browser/data_file_browser_cld_data_provider.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.
-
-// NOT DEAD CODE!
-// This code isn't dead, even if it isn't currently being used. Please refer to:
-// https://www.chromium.org/developers/how-tos/compact-language-detector-cld-data-source-configuration
-
-#ifndef COMPONENTS_TRANSLATE_CONTENT_BROWSER_DATA_FILE_BROWSER_CLD_DATA_PROVIDER_H_
-#define COMPONENTS_TRANSLATE_CONTENT_BROWSER_DATA_FILE_BROWSER_CLD_DATA_PROVIDER_H_
-
-#include <stdint.h>
-
-#include <memory>
-
-#include "base/files/file.h"
-#include "base/files/file_path.h"
-#include "base/macros.h"
-#include "base/memory/weak_ptr.h"
-#include "components/translate/content/browser/browser_cld_data_provider.h"
-
-namespace content {
-class WebContents;
-}
-
-namespace translate {
-
-class DataFileBrowserCldDataProvider : public BrowserCldDataProvider {
- public:
-  explicit DataFileBrowserCldDataProvider(content::WebContents*);
-  ~DataFileBrowserCldDataProvider() override;
-
-  // BrowserCldDataProvider implementations:
-  bool OnMessageReceived(const IPC::Message&) override;
-  void OnCldDataRequest() override;
-  void SendCldDataResponse() override;
-
- private:
-  void SendCldDataResponseInternal(const base::File*,
-                                   const uint64_t,
-                                   const uint64_t);
-  static void OnCldDataRequestInternal();
-
-  content::WebContents* web_contents_;
-  std::unique_ptr<base::WeakPtrFactory<DataFileBrowserCldDataProvider>>
-      weak_pointer_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(DataFileBrowserCldDataProvider);
-};
-
-}  // namespace translate
-
-#endif  // COMPONENTS_TRANSLATE_CONTENT_BROWSER_DATA_FILE_BROWSER_CLD_DATA_PROVIDER_H_