Use a thread pool for the CopyToPipe jobs in oknet

sky/services/oknet/src/org/domokit/oknet/NetworkServiceImpl.java

Index: sky/services/oknet/src/org/domokit/oknet/NetworkServiceImpl.java
diff --git a/sky/services/oknet/src/org/domokit/oknet/NetworkServiceImpl.java b/sky/services/oknet/src/org/domokit/oknet/NetworkServiceImpl.java
index 57946573b54bc6041fa6819cf3e7b263ddbb721f..f8b5b73d58bc021491e501d323e10a894dab85e2 100644
--- a/sky/services/oknet/src/org/domokit/oknet/NetworkServiceImpl.java
+++ b/sky/services/oknet/src/org/domokit/oknet/NetworkServiceImpl.java
@@ -26,12 +26,15 @@ import org.chromium.mojom.mojo.WebSocket;
 
 import java.io.File;
 import java.io.IOException;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
 
 /**
  * OkHttp implementation of NetworkService.
  */
 public class NetworkServiceImpl implements NetworkService {
     private static final String TAG = "NetworkServiceImpl";
+    private static ExecutorService sThreadPool;
     private static OkHttpClient sClient;
     private Core mCore;
 
@@ -39,6 +42,9 @@ public class NetworkServiceImpl implements NetworkService {
         assert core != null;
         mCore = core;
 
+        if (sThreadPool == null)
+            sThreadPool = Executors.newCachedThreadPool();
+
         if (sClient == null) {
             sClient = new OkHttpClient();
 
@@ -63,7 +69,7 @@ public class NetworkServiceImpl implements NetworkService {
 
     @Override
     public void createUrlLoader(InterfaceRequest<UrlLoader> loader) {
-        UrlLoader.MANAGER.bind(new UrlLoaderImpl(mCore, sClient), loader);
+        UrlLoader.MANAGER.bind(new UrlLoaderImpl(mCore, sClient, sThreadPool), loader);
     }
 
     @Override