TestingCamera: fix fragment cannot be created exception

Change-Id: I10aafc3ac6be65840b716cccdef1e9e8f805feae
diff --git a/apps/TestingCamera/src/com/android/testingcamera/SnapshotDialogFragment.java b/apps/TestingCamera/src/com/android/testingcamera/SnapshotDialogFragment.java
index 3b1f19d..0d56538 100644
--- a/apps/TestingCamera/src/com/android/testingcamera/SnapshotDialogFragment.java
+++ b/apps/TestingCamera/src/com/android/testingcamera/SnapshotDialogFragment.java
@@ -24,7 +24,7 @@
 import android.widget.ImageView;
 import android.widget.TextView;
 
-class SnapshotDialogFragment extends DialogFragment
+public class SnapshotDialogFragment extends DialogFragment
                 implements OnScanCompletedListener{
 
     private ImageView mInfoImage;