IME: remove unused code.

These codes are not used.

BUG=b/162559903
TEST=build local chrome

Change-Id: Ie0cb1f8c634ab3dbcc2f8873e2f2337ec6168738
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2573898Reviewed-by: Leo Zhang <googleo@chromium.org>
Reviewed-by: John Palmer <jopalmer@chromium.org>
Commit-Queue: Leo Zhang <googleo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#834122}

chromeos/services/ime/BUILD.gn

@@ -36,8 +36,6 @@ source_set("lib") {
   sources = [
     "decoder/decoder_engine.cc",
     "decoder/decoder_engine.h",
-    "decoder/downloader_impl.cc",
-    "decoder/downloader_impl.h",
     "decoder/proto_conversion.cc",
     "decoder/proto_conversion.h",
     "decoder/system_engine.cc",

chromeos/services/ime/decoder/downloader_impl.cc

-// Copyright 2019 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 "chromeos/services/ime/decoder/downloader_impl.h"
-
-namespace chromeos {
-namespace ime {
-
-DownloaderImpl::DownloaderImpl() {
-  // TODO(crbug/946913): Implement this.
-}
-
-DownloaderImpl::~DownloaderImpl() {
-  // TODO(crbug/946913): Implement this.
-}
-
-int DownloaderImpl::DownloadToFile(const char* url,
-                                   const DownloadOptions& options,
-                                   const char* file_path,
-                                   ImeCrosDownloadCallback callback) {
-  // TODO(crbug/946913): Implement this.
-  return 0;
-}
-
-void DownloaderImpl::Cancel(int request_id) {
-  // TODO(crbug/946913): Implement this.
-}
-
-}  // namespace ime
-}  // namespace chromeos

chromeos/services/ime/decoder/downloader_impl.h

-// Copyright 2019 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 CHROMEOS_SERVICES_IME_DECODER_DOWNLOADER_IMPL_H_
-#define CHROMEOS_SERVICES_IME_DECODER_DOWNLOADER_IMPL_H_
-
-#include "base/macros.h"
-#include "chromeos/services/ime/public/cpp/shared_lib/interfaces.h"
-
-namespace chromeos {
-namespace ime {
-
-class DownloaderImpl : public ImeCrosDownloader {
- public:
-  explicit DownloaderImpl();
-  ~DownloaderImpl() override;
-
-  int DownloadToFile(const char* url,
-                     const DownloadOptions& options,
-                     const char* file_path,
-                     ImeCrosDownloadCallback callback) override;
-
-  void Cancel(int request_id) override;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(DownloaderImpl);
-};
-
-}  // namespace ime
-}  // namespace chromeos
-
-#endif  // CHROMEOS_SERVICES_IME_DECODER_DOWNLOADER_IMPL_H_