[Offline Pages] Add a GCMAppHandler for offline page prefetch.

chrome/test/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/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/common/features.gni")
 import("//chrome/chrome_repack_locales.gni")
+import("//components/offline_pages/features/features.gni")
 import("//components/os_crypt/features.gni")
 import("//components/spellcheck/spellcheck_build_features.gni")
 import("//extensions/features/features.gni")
 import("//media/media_options.gni")
 import("//ppapi/features/features.gni")
 import("//remoting/remoting_enable.gni")
 import("//rlz/features/features.gni")
 import("//services/service_manager/public/service_manifest.gni")
 import("//services/catalog/public/tools/catalog.gni")
 import("//testing/test.gni")
@@ skipping 3399 matching lines @@
       "../browser/android/offline_pages/prerendering_loader_unittest.cc",
       "../browser/android/offline_pages/prerendering_offliner_unittest.cc",
       "../browser/android/offline_pages/recent_tab_helper_unittest.cc",
       "../browser/android/offline_pages/test_offline_page_model_builder.cc",
       "../browser/android/offline_pages/test_offline_page_model_builder.h",
       "../browser/android/offline_pages/test_request_coordinator_builder.cc",
       "../browser/android/offline_pages/test_request_coordinator_builder.h",
       "../browser/android/search_geolocation/search_geolocation_service_unittest.cc",
       "../browser/autofill/autofill_credit_card_filling_infobar_delegate_mobile_unittest.cc",
       "../browser/autofill/autofill_save_card_infobar_delegate_mobile_unittest.cc",
+      "../browser/offline_pages/prefetch/suggested_articles_observer_unittest.cc",

[dewittj, 2017/05/16 17:56:44]

note: I put this in |is_android| because tests have not been ported to use
|enable_offline_pages|

       "../browser/password_manager/account_chooser_dialog_android_unittest.cc",
       "../browser/password_manager/auto_signin_first_run_dialog_android_unittest.cc",
       "../browser/password_manager/save_password_infobar_delegate_android_unittest.cc",
       "../browser/permissions/permission_queue_controller_unittest.cc",
     ]
     deps += [
       ":unit_tests_java",
       "//components/gcm_driver/instance_id/android:instance_id_driver_java",
       "//components/gcm_driver/instance_id/android:instance_id_driver_test_support_java",
       "//components/offline_pages/content/background_loader:test_support",
@@ skipping 1616 matching lines @@
 }
 
 if (is_win) {
   loadable_module("conflicts_dll") {
     testonly = true
     sources = [
       "conflicts/conflicts_dll.cc",
     ]
   }
 }