[Background Sync] Use GcmNetworkManager to start the browser for sync events.

content/public/android/java/src/org/chromium/content/browser/BackgroundSyncLauncher.java

Index: content/public/android/java/src/org/chromium/content/browser/BackgroundSyncLauncher.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/BackgroundSyncLauncher.java b/content/public/android/java/src/org/chromium/content/browser/BackgroundSyncLauncher.java
deleted file mode 100644
index bad267185182d208dcaf14efc6b12dae6704278a..0000000000000000000000000000000000000000
--- a/content/public/android/java/src/org/chromium/content/browser/BackgroundSyncLauncher.java
+++ /dev/null
@@ -1,117 +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.content.browser;
-
-import android.content.Context;
-import android.content.SharedPreferences;
-import android.os.AsyncTask;
-import android.preference.PreferenceManager;
-
-import org.chromium.base.VisibleForTesting;
-import org.chromium.base.annotations.CalledByNative;
-import org.chromium.base.annotations.JNINamespace;
-
-/**
- * The {@link BackgroundSyncLauncher} singleton is created and owned by the C++ browser. It
- * registers interest in waking up the browser the next time the device goes online after the
- *browser closes via the {@link #setLaunchWhenNextOnline} method.
- *
- * Thread model: This class is to be run on the UI thread only.
- */
-@JNINamespace("content")
-public class BackgroundSyncLauncher {
-    static final String PREF_BACKGROUND_SYNC_LAUNCH_NEXT_ONLINE = "bgsync_launch_next_online";
-
-    // The instance of BackgroundSyncLauncher currently owned by a C++
-    // BackgroundSyncLauncherAndroid, if any. If it is non-null then the browser is running.
-    private static BackgroundSyncLauncher sInstance;
-
-    /**
-     * Create a BackgroundSyncLauncher object, which is owned by C++.
-     * @param context The app context.
-     */
-    @VisibleForTesting
-    @CalledByNative
-    protected static BackgroundSyncLauncher create(Context context) {
-        if (sInstance != null) {
-            throw new IllegalStateException("Already instantiated");
-        }
-
-        sInstance = new BackgroundSyncLauncher(context);
-        return sInstance;
-    }
-
-    /**
-     * Called when the C++ counterpart is deleted.
-     */
-    @VisibleForTesting
-    @CalledByNative
-    protected void destroy() {
-        assert sInstance == this;
-        sInstance = null;
-    }
-
-    /**
-     * Callback for {@link #shouldLaunchWhenNextOnline}. The run method is invoked on the UI thread.
-     */
-    public static interface ShouldLaunchCallback { public void run(Boolean shouldLaunch); }
-
-    /**
-     * Returns whether the browser should be launched when the device next goes online.
-     * This is set by C++ and reset to false each time {@link BackgroundSyncLauncher}'s singleton is
-     * created (the native browser is started). This call is asynchronous and will run the callback
-     * on the UI thread when complete.
-     * @param context The application context.
-     * @param sharedPreferences The shared preferences.
-     */
-    protected static void shouldLaunchWhenNextOnline(
-            final Context context, final ShouldLaunchCallback callback) {
-        new AsyncTask<Void, Void, Boolean>() {
-            @Override
-            protected Boolean doInBackground(Void... params) {
-                SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
-                return prefs.getBoolean(PREF_BACKGROUND_SYNC_LAUNCH_NEXT_ONLINE, false);
-            }
-            @Override
-            protected void onPostExecute(Boolean shouldLaunch) {
-                callback.run(shouldLaunch);
-            }
-        }.execute();
-    }
-
-    /**
-     * Set interest (or disinterest) in launching the browser the next time the device goes online
-     * after the browser closes. On creation of the {@link BackgroundSyncLauncher} class (on browser
-     * start) this value is reset to false. This is set by C++ and reset to false each time
-     * {@link BackgroundSyncLauncher}'s singleton is created (the native browser is started). This
-     * call is asynchronous.
-     */
-    @VisibleForTesting
-    @CalledByNative
-    protected void setLaunchWhenNextOnline(final Context context, final boolean shouldLaunch) {
-        new AsyncTask<Void, Void, Void>() {
-            @Override
-            protected Void doInBackground(Void... params) {
-                SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
-                prefs.edit()
-                        .putBoolean(PREF_BACKGROUND_SYNC_LAUNCH_NEXT_ONLINE, shouldLaunch)
-                        .apply();
-                return null;
-            }
-        }.execute();
-    }
-
-    /**
-     * True if the native browser has started and created an instance of {@link
-     * BackgroundSyncLauncher}.
-     */
-    protected static boolean hasInstance() {
-        return sInstance != null;
-    }
-
-    private BackgroundSyncLauncher(Context context) {
-        setLaunchWhenNextOnline(context, false);
-    }
-}