Forgot to commit the helper's listener

wrappers/java/classes/tools/OpenH264DownloadHelperListener.java

+package org.linphone.core.tools;
+
+public interface OpenH264DownloadHelperListener {
+	/**
+	 * Called at the beginning of download with current < max Called
+	 * at each iteration of download Called at the ending of download
+	 * with current > max
+	 * @param current: Size of file already downloaded
+	 * @param max: Size of file we want to download
+	 */
+	void OnProgress(int current, int max);
+	
+	/**
+	 * Called when we failed to download codec
+	 * @param error: Error message
+	 */
+	void OnError(String error);
+}