[Offline pages] Updates to background scheduling to use BTS

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

Index: chrome/android/java/src/org/chromium/chrome/browser/offlinepages/BackgroundOfflinerTask.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/BackgroundOfflinerTask.java b/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/BackgroundOfflinerTask.java
deleted file mode 100644
index 8bd756880df8687578b53403d73ae1ab7baf5064..0000000000000000000000000000000000000000
--- a/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/BackgroundOfflinerTask.java
+++ /dev/null
@@ -1,98 +0,0 @@
-// 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.
-
-package org.chromium.chrome.browser.offlinepages;
-
-import android.content.Context;
-import android.os.Bundle;
-
-import org.chromium.base.ApplicationStatus;
-import org.chromium.base.Callback;
-import org.chromium.base.Log;
-import org.chromium.base.SysUtils;
-import org.chromium.chrome.browser.ChromeBackgroundServiceWaiter;
-import org.chromium.chrome.browser.offlinepages.interfaces.BackgroundSchedulerProcessor;
-
-/**
- * Handles servicing of background offlining requests coming via the GcmNetworkManager.
- */
-public class BackgroundOfflinerTask {
-    private static final String TAG = "BGOfflinerTask";
-    private static final long DEFER_START_SECONDS = 5 * 60;
-
-    private final BackgroundSchedulerProcessor mBridge;
-
-    public BackgroundOfflinerTask(BackgroundSchedulerProcessor bridge) {
-        mBridge = bridge;
-    }
-
-    /**
-     * Triggers processing of background offlining requests.  This is called when
-     * system conditions are appropriate for background offlining, typically from the
-     * GcmTaskService onRunTask() method.  In response, we will start the
-     * task processing by passing the call along to the C++ RequestCoordinator.
-     * Also starts UMA collection.
-     *
-     * @returns true for success
-     */
-    public void startBackgroundRequests(
-            Context context, Bundle bundle, final ChromeBackgroundServiceWaiter waiter) {
-        // Set up backup scheduled task in case processing is killed before RequestCoordinator
-        // has a chance to reschedule base on remaining work.
-        BackgroundScheduler.getInstance(context).scheduleBackup(
-                TaskExtrasPacker.unpackTriggerConditionsFromBundle(bundle), DEFER_START_SECONDS);
-        // Complete the wait if background request processing was not started.
-        // If background processing was started, completion is going to be handled by callback.
-        if (!startBackgroundRequestsImpl(mBridge, context, bundle, createCallback(waiter))) {
-            waiter.onWaitDone();
-        }
-    }
-
-    /**
-     * Triggers processing of background offlining requests.  This is called when
-     * system conditions are appropriate for background offlining, typically from the
-     * GcmTaskService onRunTask() method.  In response, we will start the
-     * task processing by passing the call along to the C++ RequestCoordinator.
-     * Also starts UMA collection.
-     *
-     * @returns Whether processing will be carried out and completion will be indicated through a
-     *     callback.
-     */
-    static boolean startBackgroundRequestsImpl(BackgroundSchedulerProcessor bridge, Context context,
-            Bundle taskExtras, Callback<Boolean> callback) {
-        TriggerConditions triggerConditions =
-                TaskExtrasPacker.unpackTriggerConditionsFromBundle(taskExtras);
-        DeviceConditions currentConditions = DeviceConditions.getCurrentConditions(context);
-        if (!currentConditions.isPowerConnected()
-                && currentConditions.getBatteryPercentage()
-                        < triggerConditions.getMinimumBatteryPercentage()) {
-            Log.d(TAG, "Battery percentage is lower than minimum to start processing");
-            return false;
-        }
-
-        if (SysUtils.isLowEndDevice() && ApplicationStatus.hasVisibleActivities()) {
-            Log.d(TAG, "Application visible on low-end device so deferring background processing");
-            return false;
-        }
-
-        // Gather UMA data to measure how often the user's machine is amenable to background
-        // loading when we wake to do a task.
-        long taskScheduledTimeMillis = TaskExtrasPacker.unpackTimeFromBundle(taskExtras);
-        OfflinePageUtils.recordWakeupUMA(context, taskScheduledTimeMillis);
-
-        return bridge.startScheduledProcessing(currentConditions, callback);
-    }
-
-    private Callback<Boolean> createCallback(final ChromeBackgroundServiceWaiter waiter) {
-        return new Callback<Boolean>() {
-            /** Callback releasing the wakelock once background work concludes. */
-            @Override
-            public void onResult(Boolean result) {
-                Log.d(TAG, "onResult");
-                // Release the wake lock.
-                waiter.onWaitDone();
-            }
-        };
-    }
-}