Move iOS image_fetcher::ImageDecoder to layered component

ios/chrome/browser/suggestions/ios_image_decoder_impl.h

Index: ios/chrome/browser/suggestions/ios_image_decoder_impl.h
diff --git a/ios/chrome/browser/suggestions/ios_image_decoder_impl.h b/ios/chrome/browser/suggestions/ios_image_decoder_impl.h
deleted file mode 100644
index 500e9b099e2c787b84a57ae84baf47ea60d7b5e7..0000000000000000000000000000000000000000
--- a/ios/chrome/browser/suggestions/ios_image_decoder_impl.h
+++ /dev/null
@@ -1,23 +0,0 @@
-// Copyright 2016 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 IOS_CHROME_BROWSER_SUGGESTIONS_IOS_IMAGE_DECODER_IMPL_H_
-#define IOS_CHROME_BROWSER_SUGGESTIONS_IOS_IMAGE_DECODER_IMPL_H_
-
-#include "base/memory/ref_counted.h"
-#include "components/image_fetcher/image_decoder.h"
-
-namespace base {
-class TaskRunner;
-}
-
-namespace suggestions {
-
-// Factory for iOS specific implementation of image_fetcher::ImageDecoder.
-std::unique_ptr<image_fetcher::ImageDecoder> CreateIOSImageDecoder(
-    scoped_refptr<base::TaskRunner> task_runner);
-
-}  // namespace suggestions
-
-#endif  // IOS_CHROME_BROWSER_SUGGESTIONS_IOS_IMAGE_DECODER_IMPL_H_