Add failure type parameter to onFailure callback.

webrtc/sdk/android/api/org/webrtc/CameraSession.java

Index: webrtc/sdk/android/api/org/webrtc/CameraSession.java
diff --git a/webrtc/sdk/android/api/org/webrtc/CameraSession.java b/webrtc/sdk/android/api/org/webrtc/CameraSession.java
index 7feb0462cef0dc75b8239da7b69b718bd77c7d6f..4c28b2d5d221db9996fcaf9f2e4d185827e7d270 100644
--- a/webrtc/sdk/android/api/org/webrtc/CameraSession.java
+++ b/webrtc/sdk/android/api/org/webrtc/CameraSession.java
@@ -11,10 +11,12 @@
 package org.webrtc;
 
 public interface CameraSession {
+  enum FailureType { ERROR, DISCONNECTED }
+
   // Callbacks are fired on the camera thread.
   public interface CreateSessionCallback {
     void onDone(CameraSession session);
-    void onFailure(String error);
+    void onFailure(FailureType failureType, String error);
   }
 
   // Events are fired on the camera thread.