DownloadManagerController now uses WebState

ios/chrome/browser/ui/downloads/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.
 
 import("//build/config/ios/rules.gni")
 
 bundle_data("assets") {
   sources = [
     "resources/download_manager_assets.xcassets/Contents.json",
     "resources/download_manager_assets.xcassets/error_icon.imageset/Contents.json",
@@ skipping 57 matching lines @@
 source_set("unit_tests") {
   testonly = true
   sources = [
     "download_manager_controller_unittest.mm",
   ]
   deps = [
     ":downloads",
     "//base",
     "//ios/chrome/browser",
     "//ios/chrome/browser/store_kit",
+    "//ios/chrome/browser/web:test_support",
     "//ios/web:test_support",
     "//net:test_support",
     "//testing/gtest",
+    "//third_party/ocmock:ocmock",
   ]
 }