Move common ImageFetcher component files to core/

components/image_fetcher/request_metadata.cc

Index: components/image_fetcher/request_metadata.cc
diff --git a/components/image_fetcher/request_metadata.cc b/components/image_fetcher/request_metadata.cc
deleted file mode 100644
index 51748cdbaef175d3d3a791a724579f08bec19440..0000000000000000000000000000000000000000
--- a/components/image_fetcher/request_metadata.cc
+++ /dev/null
@@ -1,22 +0,0 @@
-// Copyright 2017 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 "components/image_fetcher/request_metadata.h"
-
-namespace image_fetcher {
-
-RequestMetadata::RequestMetadata()
-    : http_response_code(RESPONSE_CODE_INVALID), from_http_cache(false) {}
-
-bool operator==(const RequestMetadata& lhs, const RequestMetadata& rhs) {
-  return lhs.mime_type == rhs.mime_type &&
-         lhs.http_response_code == rhs.http_response_code &&
-         lhs.from_http_cache == rhs.from_http_cache;
-}
-
-bool operator!=(const RequestMetadata& lhs, const RequestMetadata& rhs) {
-  return !(lhs == rhs);
-}
-
-}  // namespace image_fetcher