Removing old channel code from a few more places.

Plus adding peer connection close event.

R=jiayl@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/37509004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@7982 4adac7df-926f-26a2-2b94-8c16560cd09d

talk/examples/android/src/org/appspot/apprtc/PeerConnectionClient.java

@@ -246,6 +246,8 @@ public class PeerConnectionClient {
           factory.dispose();
           factory = null;
         }
+        Log.d(TAG, "Closing peer connection done.");
+        events.onPeerConnectionClosed();
       }
     });
   }
@@ -276,10 +278,16 @@ public class PeerConnectionClient {
      */
     public void onIceDisconnected();
 
+    /**
+     * Callback fired once peer connection is closed.
+     */
+    public void onPeerConnectionClosed();
+
     /**
      * Callback fired once peer connection error happened.
      */
     public void onPeerConnectionError(String description);
+
   }
 
   private void reportError(final String errorMessage) {