Setup ProxyConfigServiceAndroid in Cronet

components/cronet/android/java/src/org/chromium/net/ChromiumUrlRequestContext.java

 // Copyright 2014 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.net;
 
 import android.content.Context;
+import android.os.Handler;
+import android.os.Looper;
 import android.os.Process;
 import android.util.Log;
 
 import org.chromium.base.CalledByNative;
 import org.chromium.base.JNINamespace;
 
 /**
  * Provides context for the native HTTP operations.
  */
 @JNINamespace("cronet")
 public class ChromiumUrlRequestContext {
     private static final int LOG_NONE = 3;  // LOG(FATAL), no VLOG.
     private static final int LOG_DEBUG = -1;  // LOG(FATAL...INFO), VLOG(1)
     private static final int LOG_VERBOSE = -2;  // LOG(FATAL...INFO), VLOG(2)
     static final String LOG_TAG = "ChromiumNetwork";
 
     /**
      * Native adapter object, owned by ChromiumUrlRequestContext.
      */
     private long mChromiumUrlRequestContextAdapter;
 
     /**
      * Constructor.
-     *
      */
     protected ChromiumUrlRequestContext(Context context, String userAgent,
             String config) {
         mChromiumUrlRequestContextAdapter = nativeCreateRequestContextAdapter(
                 context, userAgent, getLoggingLevel(), config);
         if (mChromiumUrlRequestContextAdapter == 0) {
             throw new NullPointerException("Context Adapter creation failed");
         }
+        // Post a task to UI thread to init native Chromium URLRequestContext.
+        // TODO(xunjieli): This constructor is not supposed to be invoked on
+        // the main thread. Consider making the following code into a blocking
+        // API to handle the case where we are already on main thread.
+        Runnable task = new Runnable() {
+            public void run() {
+                nativeInitRequestContextOnMainThread(
+                        mChromiumUrlRequestContextAdapter);
+            }
+        };
+        new Handler(Looper.getMainLooper()).post(task);
     }
 
     /**
      * Returns the version of this network stack formatted as N.N.N.N/X where
      * N.N.N.N is the version of Chromium and X is the revision number.
      */
     public static String getVersion() {
         return Version.getVersion();
     }
 
@@ skipping 72 matching lines @@
             long chromiumUrlRequestContextAdapter);
 
     private native void nativeInitializeStatistics();
 
     private native String nativeGetStatisticsJSON(String filter);
 
     private native void nativeStartNetLogToFile(
             long chromiumUrlRequestContextAdapter, String fileName);
 
     private native void nativeStopNetLog(long chromiumUrlRequestContextAdapter);
+
+    private native void nativeInitRequestContextOnMainThread(
+            long chromiumUrlRequestContextAdapter);
 }