Return operation name in prefetch request callback and add internal page hookup

chrome/browser/ui/BUILD.gn

 # Copyright 2014 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/chromecast_build.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/split_static_library.gni")
 import("//chrome/common/features.gni")
@@ skipping 506 matching lines @@
     "//components/invalidation/impl",
     "//components/keyed_service/content",
     "//components/keyed_service/core",
     "//components/metrics:profiler",
     "//components/mime_util",
     "//components/net_log",
     "//components/ntp_snippets",
     "//components/ntp_tiles",
     "//components/offline_pages/core",
     "//components/offline_pages/core/background:background_offliner",
+    "//components/offline_pages/core/prefetch",
     "//components/omnibox/browser",
     "//components/onc",
     "//components/password_manager/content/browser",
     "//components/password_manager/core/browser",
     "//components/password_manager/sync/browser",
     "//components/pdf/browser",
     "//components/physical_web/data_source",
     "//components/physical_web/webui",
     "//components/policy/core/browser",
     "//components/pref_registry",
@@ skipping 3080 matching lines @@
     deps += [
       "//chrome/test:test_support_ui",
       "//components/zoom",
     ]
   }
 
   if (enable_extensions) {
     deps += [ "//extensions/browser" ]
   }
 }