Move WebpDecoder from ios/web to components/image_fetcher

ios/chrome/browser/ui/omnibox/BUILD.gn

 # 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.
 
 source_set("omnibox") {
   sources = [
     "omnibox_util.cc",
     "omnibox_util.h",
     "web_omnibox_edit_controller.cc",
     "web_omnibox_edit_controller.h",
@@ skipping 72 matching lines @@
     "//ios/chrome/browser/sessions",
     "//ios/chrome/browser/ui",
     "//ios/chrome/browser/ui/commands",
     "//ios/chrome/browser/ui/fancy_ui",
     "//ios/chrome/browser/ui/popup_menu",
     "//ios/chrome/common",
     "//ios/public/provider/chrome/browser",
     "//ios/third_party/material_components_ios",
     "//ios/third_party/material_roboto_font_loader_ios",
     "//ios/web",
-    "//ios/web/public/image_fetcher",
     "//net",
     "//skia",
     "//third_party/google_toolbox_for_mac",
     "//ui/base",
     "//ui/gfx",
     "//ui/gfx/geometry",
     "//url",
   ]
   public_deps = [
     "//components/omnibox/browser",
@@ skipping 27 matching lines @@
   visibility = [ ":unit_tests" ]
   testonly = true
   sources = [
     "//ios/chrome/test/data/omnibox/selected_ranges.txt",
   ]
   outputs = [
     "{{bundle_resources_dir}}/" +
         "ios/chrome/test/data/omnibox/{{source_file_part}}",
   ]
 }