Move ReadingList model to components/reading_list/core

ios/chrome/browser/tabs/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("tabs") {
   sources = [
     "legacy_tab_helper.h",
     "tab.h",
     "tab_delegate.h",
     "tab_dialog_delegate.h",
@@ skipping 33 matching lines @@
     "//components/favicon/ios",
     "//components/google/core/browser",
     "//components/history/core/browser",
     "//components/history/ios/browser",
     "//components/infobars/core",
     "//components/keyed_service/core",
     "//components/metrics_services_manager",
     "//components/navigation_metrics",
     "//components/prefs",
     "//components/reading_list/core",
-    "//components/reading_list/ios",
+    "//components/reading_list/core:flags",
     "//components/search_engines",
     "//components/sessions",
     "//components/signin/core/browser",
     "//components/signin/ios/browser",
     "//components/strings",
     "//components/url_formatter",
     "//ios/chrome/app/strings",
     "//ios/chrome/browser",
     "//ios/chrome/browser/autofill",
     "//ios/chrome/browser/autofill:autofill_internal",
@@ skipping 67 matching lines @@
     "tab_parenting_observer.h",
     "tab_parenting_observer.mm",
   ]
   deps = [
     ":tabs",
     "//base",
     "//components/favicon/ios",
     "//components/history/core/browser",
     "//components/history/ios/browser",
     "//components/keyed_service/core",
-    "//components/reading_list/core",
+    "//components/reading_list/core:flags",
     "//components/signin/ios/browser",
     "//ios/chrome/browser",
     "//ios/chrome/browser/bookmarks",
     "//ios/chrome/browser/browser_state",
     "//ios/chrome/browser/favicon",
     "//ios/chrome/browser/find_in_page",
     "//ios/chrome/browser/find_in_page",
     "//ios/chrome/browser/history",
     "//ios/chrome/browser/infobars",
     "//ios/chrome/browser/reading_list",
@@ skipping 58 matching lines @@
     ":tabs",
     ":tabs_internal",
     "//base",
     "//ios/chrome/browser/browser_state:test_support",
     "//ios/chrome/browser/sessions:test_support",
     "//ios/web:test_support",
     "//testing/gtest",
   ]
   configs += [ "//build/config/compiler:enable_arc" ]
 }