Move iOS ImageFetcher to ios/web/public

ios/web/BUILD.gn

 # Copyright 2015 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.
 
 import("//ios/build/config.gni")
 import("//ios/web/js_compile.gni")
 import("//testing/test.gni")
 import("//tools/grit/grit_rule.gni")
 
 source_set("web_arc") {
@@ skipping 460 matching lines @@
   deps = [
     ":core",
     ":ios_web_unittests_bundle_data",
     ":run_all_unittests",
     ":test_support",
     ":web",
     "//base",
     "//base/test:test_support",
     "//ios/net",
     "//ios/testing:ocmock_support",
+    "//ios/web/public/image_fetcher:unit_tests",
     "//ios/web/test:mojo_bindings",
     "//net:test_support",
     "//services/service_manager/public/cpp",
     "//testing/gmock",
     "//testing/gtest",
     "//third_party/ocmock",
     "//ui/base:test_support",
   ]
 
   sources = [
@@ skipping 124 matching lines @@
 }
 
 grit("resources") {
   source = "ios_web_resources.grd"
   use_qualified_include = true
   outputs = [
     "grit/ios_web_resources.h",
     "ios_web_resources.pak",
   ]
 }