General cleanup on AppRTC Android Demo codebase

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

Index: webrtc/examples/androidapp/src/org/appspot/apprtc/RoomParametersFetcher.java
diff --git a/webrtc/examples/androidapp/src/org/appspot/apprtc/RoomParametersFetcher.java b/webrtc/examples/androidapp/src/org/appspot/apprtc/RoomParametersFetcher.java
index 2c9e60d7075518296ebf507d7f9a24c0360d4c47..8996c07bcc4c1c39800636b28624867026cc8ad4 100644
--- a/webrtc/examples/androidapp/src/org/appspot/apprtc/RoomParametersFetcher.java
+++ b/webrtc/examples/androidapp/src/org/appspot/apprtc/RoomParametersFetcher.java
@@ -45,17 +45,17 @@ public class RoomParametersFetcher {
   /**
    * Room parameters fetcher callbacks.
    */
-  public static interface RoomParametersFetcherEvents {
+  public interface RoomParametersFetcherEvents {
     /**
      * Callback fired once the room's signaling parameters
      * SignalingParameters are extracted.
      */
-    public void onSignalingParametersReady(final SignalingParameters params);
+    void onSignalingParametersReady(final SignalingParameters params);
 
     /**
      * Callback for room parameters extraction error.
      */
-    public void onSignalingParametersError(final String description);
+    void onSignalingParametersError(final String description);
   }
 
   public RoomParametersFetcher(String roomUrl, String roomMessage,