[Offline pages] Implementation of OfflineBackgroundTask using background_task_scheduler

chrome/android/java_sources.gni

 # 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.
 
 chrome_java_sources = [
   "java/src/com/google/android/apps/chrome/appwidget/bookmarks/BookmarkThumbnailWidgetProvider.java",
   "java/src/org/chromium/chrome/browser/ActivityTabTaskDescriptionHelper.java",
   "java/src/org/chromium/chrome/browser/ActivityTaskDescriptionIconGenerator.java",
   "java/src/org/chromium/chrome/browser/AfterStartupTaskUtils.java",
   "java/src/org/chromium/chrome/browser/ApplicationInitialization.java",
@@ skipping 606 matching lines @@
   "java/src/org/chromium/chrome/browser/ntp/snippets/SnippetsBridge.java",
   "java/src/org/chromium/chrome/browser/ntp/snippets/SnippetsConfig.java",
   "java/src/org/chromium/chrome/browser/ntp/snippets/SnippetsLauncher.java",
   "java/src/org/chromium/chrome/browser/ntp/snippets/SuggestionsSource.java",
   "java/src/org/chromium/chrome/browser/offlinepages/DeviceConditions.java",
   "java/src/org/chromium/chrome/browser/offlinepages/BackgroundOfflinerTask.java",
   "java/src/org/chromium/chrome/browser/offlinepages/BackgroundGcmScheduler.java",
   "java/src/org/chromium/chrome/browser/offlinepages/BackgroundJobScheduler.java",
   "java/src/org/chromium/chrome/browser/offlinepages/BackgroundScheduler.java",
   "java/src/org/chromium/chrome/browser/offlinepages/BackgroundSchedulerBridge.java",
-  "java/src/org/chromium/chrome/browser/offlinepages/BackgroundSchedulerJobService.java",
   "java/src/org/chromium/chrome/browser/offlinepages/BackgroundSchedulerProcessorImpl.java",
   "java/src/org/chromium/chrome/browser/offlinepages/ClientId.java",
+  "java/src/org/chromium/chrome/browser/offlinepages/OfflineBackgroundTask.java",
   "java/src/org/chromium/chrome/browser/offlinepages/OfflinePageBridge.java",
   "java/src/org/chromium/chrome/browser/offlinepages/OfflinePageItem.java",
   "java/src/org/chromium/chrome/browser/offlinepages/OfflinePageTabObserver.java",
   "java/src/org/chromium/chrome/browser/offlinepages/OfflinePageUtils.java",
   "java/src/org/chromium/chrome/browser/offlinepages/SavePageRequest.java",
   "java/src/org/chromium/chrome/browser/offlinepages/TaskExtrasPacker.java",
   "java/src/org/chromium/chrome/browser/offlinepages/TriggerConditions.java",
   "java/src/org/chromium/chrome/browser/offlinepages/downloads/OfflinePageDownloadBridge.java",
   "java/src/org/chromium/chrome/browser/offlinepages/downloads/OfflinePageDownloadItem.java",
   "java/src/org/chromium/chrome/browser/offlinepages/downloads/OfflinePageNotificationBridge.java",
@@ skipping 976 matching lines @@
   "sync_shell/javatests/src/org/chromium/chrome/browser/sync/SyncTestBase.java",
   "sync_shell/javatests/src/org/chromium/chrome/browser/sync/TypedUrlsTest.java",
   "sync_shell/javatests/src/org/chromium/chrome/browser/sync/ui/PassphraseTypeDialogFragmentTest.java",
 ]
 
 # Only used for testing, should not be shipped to end users.
 if (!is_official_build) {
   chrome_java_sources += [ "java/src/org/chromium/chrome/browser/offlinepages/evaluation/OfflinePageEvaluationBridge.java" ]
   chrome_test_java_sources += [ "javatests/src/org/chromium/chrome/browser/offlinepages/OfflinePageSavePageLaterEvaluationTest.java" ]
 }