Execute operations of ChildProcessLauncher on launcher thread

chrome/android/java/src/org/chromium/chrome/browser/prerender/ChromePrerenderService.java

Index: chrome/android/java/src/org/chromium/chrome/browser/prerender/ChromePrerenderService.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/prerender/ChromePrerenderService.java b/chrome/android/java/src/org/chromium/chrome/browser/prerender/ChromePrerenderService.java
index a700dfdb5efa584b5b33f98527fc88be425eda11..ffd2f863b264605d5c789ef6fcbe5b531ec8356d 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/prerender/ChromePrerenderService.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/prerender/ChromePrerenderService.java
@@ -7,7 +7,6 @@ package org.chromium.chrome.browser.prerender;
 import android.app.Service;
 import android.content.Context;
 import android.content.Intent;
-import android.os.AsyncTask;
 import android.os.IBinder;
 import android.os.Message;
 import android.os.Messenger;
@@ -37,14 +36,6 @@ public class ChromePrerenderService extends Service {
     public static final String KEY_PRERENDER_HEIGHT = "prerender_height";
     public static final String KEY_REFERRER = "referrer";
 
-    private static class LauncherWarmUpTask extends AsyncTask<Context, Void, Void> {
-        @Override
-        protected Void doInBackground(Context... args) {
-            ChildProcessLauncher.warmUp(args[0]);
-            return null;
-        }
-    }
-
     /**
      * Handler of incoming messages from clients.
      */
@@ -75,7 +66,7 @@ public class ChromePrerenderService extends Service {
         mMessenger = new Messenger(new IncomingHandler(getApplicationContext()));
 
         try {
-            new LauncherWarmUpTask().execute(getApplicationContext());
+            ChildProcessLauncher.warmUp(getApplicationContext());
             ((ChromeApplication) getApplication())
                     .startBrowserProcessesAndLoadLibrariesSync(true);