android: Use new proxy from PROXY_CHANGE intent

net/proxy/proxy_config_service_android.h

 // Copyright (c) 2012 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.
 
 #ifndef NET_PROXY_PROXY_CONFIG_SERVICE_ANDROID_H_
 #define NET_PROXY_PROXY_CONFIG_SERVICE_ANDROID_H_
 
 #include <string>
 
 #include "base/android/jni_android.h"
@@ skipping 21 matching lines @@
   typedef base::Callback<std::string (const std::string& property)>
       GetPropertyCallback;
 
   // Separate class whose instance is owned by the Delegate class implemented in
   // the .cc file.
   class JNIDelegate {
    public:
     virtual ~JNIDelegate() {}
 
     // Called from Java (on JNI thread) to signal that the proxy settings have
-    // changed.
+    // changed. The string and int arguments (the host/port pair for the proxy)
+    // are either a host/port pair or ("", 0) to indicate "no proxy".
+    virtual void ProxySettingsChangedTo(JNIEnv*, jobject, jstring, jint) = 0;
+
+    // Called from Java (on JNI thread) to signal that the proxy settings have
+    // changed. New proxy settings are fetched from the system property store.
     virtual void ProxySettingsChanged(JNIEnv*, jobject) = 0;
   };
 
   ProxyConfigServiceAndroid(base::SequencedTaskRunner* network_task_runner,
                             base::SequencedTaskRunner* jni_task_runner);
 
   virtual ~ProxyConfigServiceAndroid();
 
   // Register JNI bindings.
   static bool Register(JNIEnv* env);
@@ skipping 17 matching lines @@
   void ProxySettingsChanged();
 
   scoped_refptr<Delegate> delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(ProxyConfigServiceAndroid);
 };
 
 } // namespace net
 
 #endif // NET_PROXY_PROXY_CONFIG_SERVICE_ANDROID_H_