Revert of Android: Switch to thread pool executor

chrome/browser/android/background_sync_launcher_android.cc

 // 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.
 
 #include "chrome/browser/android/background_sync_launcher_android.h"
 
 #include "base/android/context_utils.h"
 #include "content/public/browser/browser_thread.h"
 #include "jni/BackgroundSyncLauncher_jni.h"
 
@@ skipping 26 matching lines @@
   Get()->LaunchBrowserIfStoppedImpl(launch_when_next_online, min_delay_ms);
 }
 
 void BackgroundSyncLauncherAndroid::LaunchBrowserIfStoppedImpl(
     bool launch_when_next_online,
     int64_t min_delay_ms) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 
   JNIEnv* env = base::android::AttachCurrentThread();
   Java_BackgroundSyncLauncher_launchBrowserIfStopped(
-      env, java_launcher_, launch_when_next_online, min_delay_ms);
+      env, java_launcher_, base::android::GetApplicationContext(),
+      launch_when_next_online, min_delay_ms);
 }
 
 // static
 void BackgroundSyncLauncherAndroid::SetPlayServicesVersionCheckDisabledForTests(
     bool disabled) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   disable_play_services_version_check_for_tests = disabled;
 }
 
 // static
@@ skipping 14 matching lines @@
   java_launcher_.Reset(Java_BackgroundSyncLauncher_create(
       env, base::android::GetApplicationContext()));
 }
 
 BackgroundSyncLauncherAndroid::~BackgroundSyncLauncherAndroid() {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 
   JNIEnv* env = base::android::AttachCurrentThread();
   Java_BackgroundSyncLauncher_destroy(env, java_launcher_);
 }