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

content/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 "content/browser/android/background_sync_launcher_android.h"
 
 #include "content/public/browser/browser_thread.h"
 #include "jni/BackgroundSyncLauncher_jni.h"
 
 namespace content {
@@ skipping 28 matching lines @@
 
   if (launch_when_next_online)
     launch_when_next_online_registrants_.insert(registrant);
   else
     launch_when_next_online_registrants_.erase(registrant);
 
   bool now_launching = !launch_when_next_online_registrants_.empty();
   if (was_launching != now_launching) {
     JNIEnv* env = base::android::AttachCurrentThread();
     Java_BackgroundSyncLauncher_setLaunchWhenNextOnline(
-        env, java_launcher_.obj(), base::android::GetApplicationContext(),
-        now_launching);
+        env, java_launcher_.obj(), now_launching);
   }
 }
 
 // static
 bool BackgroundSyncLauncherAndroid::RegisterLauncher(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 BackgroundSyncLauncherAndroid::BackgroundSyncLauncherAndroid() {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 
   JNIEnv* env = base::android::AttachCurrentThread();
   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_.obj());
 }
 
 }  // namespace content