[Offline pages] Implementation of OfflineBackgroundTask using background_task_scheduler

chrome/android/java/src/org/chromium/chrome/browser/offlinepages/BackgroundSchedulerJobService.java

Index: chrome/android/java/src/org/chromium/chrome/browser/offlinepages/BackgroundSchedulerJobService.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/BackgroundSchedulerJobService.java b/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/BackgroundSchedulerJobService.java
deleted file mode 100644
index b984f4c7d28a54f27ff0ef5c225244aa65351bf4..0000000000000000000000000000000000000000
--- a/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/BackgroundSchedulerJobService.java
+++ /dev/null
@@ -1,35 +0,0 @@
-// Copyright 2017 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.
-
-package org.chromium.chrome.browser.offlinepages;
-
-import android.annotation.TargetApi;
-import android.app.job.JobParameters;
-import android.app.job.JobService;
-import android.os.Build;
-
-/**
- * The background scheduler job service for handling background request in 5.1+.
- */
-@TargetApi(Build.VERSION_CODES.LOLLIPOP_MR1)
-public class BackgroundSchedulerJobService extends JobService {
-    @Override
-    public boolean onStartJob(JobParameters params) {
-        // TODO(fgorski): Implement and expose in metadata.
-        // Perhaps initialize application context.
-        // Perhaps ensure one job runs at a time only.
-        // Kick off background processing of downloads here.
-        // Processing will happen on a separate thread, and we'll inform OS when done.
-        return true;
-    }
-
-    @Override
-    public boolean onStopJob(JobParameters params) {
-        // TODO(fgorski): Implement and expose in metadata.
-        // Issue a cancel signal to request coordinator.
-        // This is where synchronization might be necessary.
-        // If we didn't stop ourselves, that likely means there is more work to do.
-        return true;
-    }
-}