General cleanup on AppRTC Android Demo codebase

webrtc/examples/androidapp/src/org/appspot/apprtc/AppRTCClient.java

 /*
  *  Copyright 2013 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 package org.appspot.apprtc;
 
 import org.webrtc.IceCandidate;
 import org.webrtc.PeerConnection;
 import org.webrtc.SessionDescription;
 
 import java.util.List;
 
 /**
  * AppRTCClient is the interface representing an AppRTC client.
  */
 public interface AppRTCClient {
 
   /**
    * Struct holding the connection parameters of an AppRTC room.
    */
-  public static class RoomConnectionParameters {
+  class RoomConnectionParameters {
     public final String roomUrl;
     public final String roomId;
     public final boolean loopback;
     public RoomConnectionParameters(
         String roomUrl, String roomId, boolean loopback) {
       this.roomUrl = roomUrl;
       this.roomId = roomId;
       this.loopback = loopback;
     }
   }
 
   /**
    * Asynchronously connect to an AppRTC room URL using supplied connection
    * parameters. Once connection is established onConnectedToRoom()
    * callback with room parameters is invoked.
    */
-  public void connectToRoom(RoomConnectionParameters connectionParameters);
+  void connectToRoom(RoomConnectionParameters connectionParameters);
 
   /**
    * Send offer SDP to the other participant.
    */
-  public void sendOfferSdp(final SessionDescription sdp);
+  void sendOfferSdp(final SessionDescription sdp);
 
   /**
    * Send answer SDP to the other participant.
    */
-  public void sendAnswerSdp(final SessionDescription sdp);
+  void sendAnswerSdp(final SessionDescription sdp);
 
   /**
    * Send Ice candidate to the other participant.
    */
-  public void sendLocalIceCandidate(final IceCandidate candidate);
+  void sendLocalIceCandidate(final IceCandidate candidate);
 
   /**
    * Send removed ICE candidates to the other participant.
    */
-  public void sendLocalIceCandidateRemovals(final IceCandidate[] candidates);
+  void sendLocalIceCandidateRemovals(final IceCandidate[] candidates);
 
   /**
    * Disconnect from room.
    */
-  public void disconnectFromRoom();
+  void disconnectFromRoom();
 
   /**
    * Struct holding the signaling parameters of an AppRTC room.
    */
-  public static class SignalingParameters {
+  class SignalingParameters {
     public final List<PeerConnection.IceServer> iceServers;
     public final boolean initiator;
     public final String clientId;
     public final String wssUrl;
     public final String wssPostUrl;
     public final SessionDescription offerSdp;
     public final List<IceCandidate> iceCandidates;
 
     public SignalingParameters(
         List<PeerConnection.IceServer> iceServers,
         boolean initiator, String clientId,
         String wssUrl, String wssPostUrl,
         SessionDescription offerSdp, List<IceCandidate> iceCandidates) {
       this.iceServers = iceServers;
       this.initiator = initiator;
       this.clientId = clientId;
       this.wssUrl = wssUrl;
       this.wssPostUrl = wssPostUrl;
       this.offerSdp = offerSdp;
       this.iceCandidates = iceCandidates;
     }
   }
 
   /**
    * Callback interface for messages delivered on signaling channel.
    *
    * <p>Methods are guaranteed to be invoked on the UI thread of |activity|.
    */
-  public static interface SignalingEvents {
+  interface SignalingEvents {
     /**
      * Callback fired once the room's signaling parameters
      * SignalingParameters are extracted.
      */
-    public void onConnectedToRoom(final SignalingParameters params);
+    void onConnectedToRoom(final SignalingParameters params);
 
     /**
      * Callback fired once remote SDP is received.
      */
-    public void onRemoteDescription(final SessionDescription sdp);
+    void onRemoteDescription(final SessionDescription sdp);
 
     /**
      * Callback fired once remote Ice candidate is received.
      */
-    public void onRemoteIceCandidate(final IceCandidate candidate);
+    void onRemoteIceCandidate(final IceCandidate candidate);
 
     /**
      * Callback fired once remote Ice candidate removals are received.
      */
-    public void onRemoteIceCandidatesRemoved(final IceCandidate[] candidates);
+    void onRemoteIceCandidatesRemoved(final IceCandidate[] candidates);
 
     /**
      * Callback fired once channel is closed.
      */
-    public void onChannelClose();
+    void onChannelClose();
 
     /**
      * Callback fired once channel error happened.
      */
-    public void onChannelError(final String description);
+    void onChannelError(final String description);
   }
 }