Fully deprecate core.js. Moved last method to error.js.

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")
 
 group("all_tests") {
@@ skipping 676 matching lines @@
 
 js_compile_bundle("web_bundle") {
   visibility = [ ":js_resources" ]
   closure_entry_point = "__crWeb.webBundle"
 
   sources = [
     "web_state/js/resources/base.js",
     "web_state/js/resources/common.js",
     "web_state/js/resources/console.js",
     "web_state/js/resources/context_menu.js",
-    "web_state/js/resources/core.js",
     "web_state/js/resources/dialog_overrides.js",
+    "web_state/js/resources/error.js",
     "web_state/js/resources/form.js",
     "web_state/js/resources/legacy.js",
     "web_state/js/resources/message.js",
     "web_state/js/resources/navigation.js",
     "web_state/js/resources/scroll_workaround.js",
     "web_state/js/resources/web_bundle.js",
   ]
 }
 
 js_compile_checked("js_resources") {
@@ skipping 16 matching lines @@
     "ios_web_resources.pak",
   ]
   grit_flags = [
     "-E",
     "root_gen_dir=" + rebase_path(root_gen_dir, root_build_dir),
   ]
   deps = [
     "//mojo/public/js:bindings",
   ]
 }