Move common ImageFetcher component files to core/

components/image_fetcher/BUILD.gn

Index: components/image_fetcher/BUILD.gn
diff --git a/components/image_fetcher/BUILD.gn b/components/image_fetcher/BUILD.gn
deleted file mode 100644
index f911424ac1da87265a5a8000b7fe95b2b07561d9..0000000000000000000000000000000000000000
--- a/components/image_fetcher/BUILD.gn
+++ /dev/null
@@ -1,40 +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.
-
-static_library("image_fetcher") {
-  sources = [
-    "image_data_fetcher.cc",
-    "image_data_fetcher.h",
-    "image_decoder.h",
-    "image_fetcher.h",
-    "image_fetcher_delegate.h",
-    "image_fetcher_impl.cc",
-    "image_fetcher_impl.h",
-    "request_metadata.cc",
-    "request_metadata.h",
-  ]
-
-  public_deps = [
-    "//base",
-    "//components/data_use_measurement/core",
-    "//net",
-    "//ui/gfx/geometry",
-    "//url",
-  ]
-}
-
-source_set("unit_tests") {
-  testonly = true
-  sources = [
-    "image_data_fetcher_unittest.cc",
-    "request_metadata_unittest.cc",
-  ]
-  deps = [
-    ":image_fetcher",
-    "//net",
-    "//net:test_support",
-    "//testing/gmock",
-    "//testing/gtest",
-  ]
-}