Delete the non-static CLD data source logic.

components/translate/content/renderer/data_file_renderer_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_RENDERER_DATA_FILE_RENDERER_CLD_DATA_PROVIDER_H_
-#define COMPONENTS_TRANSLATE_CONTENT_RENDERER_DATA_FILE_RENDERER_CLD_DATA_PROVIDER_H_
-
-#include <stdint.h>
-
-#include "base/files/file.h"
-#include "base/macros.h"
-#include "components/translate/content/renderer/renderer_cld_data_provider.h"
-#include "ipc/ipc_platform_file.h"
-
-namespace content {
-class RenderFrameObserver;
-}
-
-namespace translate {
-
-class DataFileRendererCldDataProvider : public RendererCldDataProvider {
- public:
-  explicit DataFileRendererCldDataProvider(content::RenderFrameObserver*);
-  ~DataFileRendererCldDataProvider() override;
-
-  // Load the CLD data from the specified file, starting at the specified byte
-  // offset and having the specified length (also in bytes). Nominally, the
-  // implementation will mmap the file in read-only mode and hand the data off
-  // to CLD2::loadDataFromRawAddress(...). See the module
-  // third_party/cld_2/src/internal/compact_lang_det.h for more information on
-  // the dynamic data loading process.
-  void LoadCldData(base::File file,
-                   const uint64_t data_offset,
-                   const uint64_t data_length);
-
-  // RendererCldDataProvider implementations:
-  bool OnMessageReceived(const IPC::Message&) override;
-  void SendCldDataRequest() override;
-  void SetCldAvailableCallback(base::Callback<void(void)>) override;
-  bool IsCldDataAvailable() override;
-
- private:
-  void OnCldDataAvailable(const IPC::PlatformFileForTransit ipc_file_handle,
-                          const uint64_t data_offset,
-                          const uint64_t data_length);
-  content::RenderFrameObserver* render_frame_observer_;
-  base::Callback<void(void)> cld_available_callback_;
-
-  DISALLOW_COPY_AND_ASSIGN(DataFileRendererCldDataProvider);
-};
-
-}  // namespace translate
-
-#endif  // COMPONENTS_TRANSLATE_CONTENT_RENDERER_DATA_FILE_RENDERER_CLD_DATA_PROVIDER_H_