Split up ios/web:test_support.

ios/chrome/browser/ui/payments/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("//ios/web/js_compile.gni")
 
 source_set("payments") {
   configs += [ "//build/config/compiler:enable_arc" ]
   sources = [
     "address_edit_coordinator.h",
@@ skipping 164 matching lines @@
     "//ios/chrome/browser/ui/autofill:autofill_ui",
     "//ios/chrome/browser/ui/autofill/cells",
     "//ios/chrome/browser/ui/collection_view:test_support",
     "//ios/chrome/browser/ui/collection_view/cells",
     "//ios/chrome/browser/ui/collection_view/cells:test_support",
     "//ios/chrome/browser/ui/payments/cells",
     "//ios/chrome/test:test_support",
     "//ios/testing:ocmock_support",
     "//ios/third_party/material_components_ios",
     "//ios/web",
-    "//ios/web:test_support",
+    "//ios/web/public/test",
     "//testing/gmock",
     "//testing/gtest",
     "//third_party/ocmock",
     "//ui/base",
   ]
 }