Revert of precache: Move the java files into //components/precache/android

chrome/android/java/src/org/chromium/chrome/browser/precache/PrecacheService.java

Index: chrome/android/java/src/org/chromium/chrome/browser/precache/PrecacheService.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/precache/PrecacheService.java b/chrome/android/java/src/org/chromium/chrome/browser/precache/PrecacheService.java
deleted file mode 100644
index 09a557be3d0995a6133972c2cf629ee69b6e4c0b..0000000000000000000000000000000000000000
--- a/chrome/android/java/src/org/chromium/chrome/browser/precache/PrecacheService.java
+++ /dev/null
@@ -1,211 +0,0 @@
-// Copyright 2015 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.precache;
-
-import android.app.Service;
-import android.content.BroadcastReceiver;
-import android.content.Context;
-import android.content.Intent;
-import android.content.IntentFilter;
-import android.net.ConnectivityManager;
-import android.os.IBinder;
-import android.os.PowerManager;
-import android.os.PowerManager.WakeLock;
-import android.util.Log;
-
-import org.chromium.base.VisibleForTesting;
-import org.chromium.base.annotations.SuppressFBWarnings;
-import org.chromium.base.library_loader.LibraryProcessType;
-import org.chromium.base.library_loader.ProcessInitException;
-import org.chromium.components.precache.DeviceState;
-import org.chromium.content.browser.BrowserStartupController;
-
-/**
- * Background service that runs while Chrome is precaching resources. Precaching is only done while
- * the device is connected to power, Wi-Fi, and the device is not interactive (e.g., the screen is
- * off. This is a sticky service that is started when the {@link PrecacheServiceLauncher}
- * determines that conditions are right for precaching. Once started, this service runs until
- * either precaching finishes successfully, or the conditions are no longer met.
- */
-public class PrecacheService extends Service {
-    private static final String TAG = "PrecacheService";
-
-    public static final String ACTION_START_PRECACHE =
-            "org.chromium.chrome.browser.precache.PrecacheService.START_PRECACHE";
-
-    /** Wakelock that is held while precaching is in progress. */
-    private WakeLock mPrecachingWakeLock;
-
-    /** True if there is a precache in progress. */
-    private boolean mIsPrecaching = false;
-
-    @VisibleForTesting
-    boolean isPrecaching() {
-        return mIsPrecaching;
-    }
-
-    private DeviceState mDeviceState = DeviceState.getInstance();
-
-    @VisibleForTesting
-    void setDeviceState(DeviceState deviceState) {
-        mDeviceState = deviceState;
-    }
-
-
-    /** Receiver that will be notified when conditions become wrong for precaching. */
-    private final BroadcastReceiver mDeviceStateReceiver = new BroadcastReceiver() {
-        @Override
-        public void onReceive(Context context, Intent intent) {
-            if (mIsPrecaching && (mDeviceState.isInteractive(context)
-                    || !mDeviceState.isPowerConnected(context)
-                    || !mDeviceState.isWifiAvailable(context))) {
-                cancelPrecaching();
-            }
-        }
-    };
-
-    @VisibleForTesting
-    BroadcastReceiver getDeviceStateReceiver() {
-        return mDeviceStateReceiver;
-    }
-
-    @VisibleForTesting
-    void handlePrecacheCompleted() {
-        if (mIsPrecaching) finishPrecaching();
-    }
-
-    /** PrecacheLauncher used to run precaching. */
-    private PrecacheLauncher mPrecacheLauncher = new PrecacheLauncher() {
-        @Override
-        protected void onPrecacheCompleted() {
-            handlePrecacheCompleted();
-        }
-    };
-
-    @VisibleForTesting
-    void setPrecacheLauncher(PrecacheLauncher precacheLauncher) {
-        mPrecacheLauncher = precacheLauncher;
-    }
-
-    @Override
-    public void onCreate() {
-        super.onCreate();
-        registerDeviceStateReceiver();
-    }
-
-    @Override
-    public void onDestroy() {
-        if (mIsPrecaching) cancelPrecaching();
-
-        unregisterReceiver(mDeviceStateReceiver);
-        mPrecacheLauncher.destroy();
-        releasePrecachingWakeLock();
-
-        super.onDestroy();
-    }
-
-    @Override
-    public int onStartCommand(Intent intent, int flags, int startId) {
-        try {
-            if (intent != null && ACTION_START_PRECACHE.equals(intent.getAction())
-                    && !mIsPrecaching) {
-                // Only start precaching if precaching is not already in progress.
-                startPrecaching();
-            }
-        } finally {
-            PrecacheServiceLauncher.releaseWakeLock();
-        }
-        // The PrecacheService should only be running while precaching is in progress. Return
-        // {@link Service.START_STICKY} if precaching is in progress to keep the service running;
-        // otherwise, return {@link Service.START_NOT_STICKY} to cause the service to stop once it
-        // is done processing commands sent to it.
-        return mIsPrecaching ? START_STICKY : START_NOT_STICKY;
-    }
-
-    /** PrecacheService does not support binding. */
-    @Override
-    public IBinder onBind(Intent intent) {
-        return null;
-    }
-
-    /** Attempt to start up the browser processes and load the native libraries. */
-    @SuppressFBWarnings("DM_EXIT")
-    @VisibleForTesting
-    void prepareNativeLibraries() {
-        try {
-            BrowserStartupController.get(getApplicationContext(),
-                                             LibraryProcessType.PROCESS_BROWSER)
-                    .startBrowserProcessesSync(false);
-        } catch (ProcessInitException e) {
-            Log.e(TAG, "ProcessInitException while starting the browser process");
-            // Since the library failed to initialize nothing in the application
-            // can work, so kill the whole application not just the activity.
-            System.exit(-1);
-        }
-    }
-
-    /** Begin a precache cycle. */
-    private void startPrecaching() {
-        Log.v(TAG, "Start precaching");
-        prepareNativeLibraries();
-        mIsPrecaching = true;
-        acquirePrecachingWakeLock();
-
-        // In certain cases, the PrecacheLauncher will skip precaching entirely and call
-        // finishPrecaching() before this call to mPrecacheLauncher.start() returns, so the call to
-        // mPrecacheLauncher.start() must happen after acquiring the wake lock to ensure that the
-        // wake lock is released properly.
-        mPrecacheLauncher.start();
-    }
-
-    /** End a precache cycle. */
-    private void finishPrecaching() {
-        Log.v(TAG, "Finish precaching");
-        shutdownPrecaching();
-    }
-
-    /** Cancel a precache cycle. */
-    private void cancelPrecaching() {
-        Log.v(TAG, "Cancel precaching");
-        prepareNativeLibraries();
-        mPrecacheLauncher.cancel();
-
-        shutdownPrecaching();
-    }
-
-    /**
-     * Update state to indicate that precaching is no longer in progress, and stop the service.
-     */
-    private void shutdownPrecaching() {
-        mIsPrecaching = false;
-        releasePrecachingWakeLock();
-        stopSelf();
-    }
-
-    /** Register a BroadcastReceiver to detect when conditions become wrong for precaching. */
-    private void registerDeviceStateReceiver() {
-        IntentFilter filter = new IntentFilter();
-        filter.addAction(Intent.ACTION_POWER_DISCONNECTED);
-        filter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
-        filter.addAction(Intent.ACTION_SCREEN_ON);
-        registerReceiver(mDeviceStateReceiver, filter);
-    }
-
-    /** Acquire the precaching WakeLock. */
-    private void acquirePrecachingWakeLock() {
-        if (mPrecachingWakeLock == null) {
-            PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
-            mPrecachingWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG);
-        }
-        mPrecachingWakeLock.acquire();
-    }
-
-    /** Release the precaching WakeLock if it is held. */
-    private void releasePrecachingWakeLock() {
-        if (mPrecachingWakeLock != null && mPrecachingWakeLock.isHeld()) {
-            mPrecachingWakeLock.release();
-        }
-    }
-}