Gallery2: reduce post delay time

Currently there is 500ms of delay added in Video view that adds to
app playback startup latency time. Reducing this delay to 50ms helps
in reducing the startup latency.

Change-Id: If1db674a66d68b94654868fd3e4d5c84ea5265e7
diff --git a/src/com/android/gallery3d/app/MoviePlayer.java b/src/com/android/gallery3d/app/MoviePlayer.java
index f6bd367..0e14c3d 100644
--- a/src/com/android/gallery3d/app/MoviePlayer.java
+++ b/src/com/android/gallery3d/app/MoviePlayer.java
@@ -69,7 +69,7 @@
     private static final String CMDPAUSE = "pause";
 
     private static final String VIRTUALIZE_EXTRA = "virtualize";
-    private static final long BLACK_TIMEOUT = 500;
+    private static final long BLACK_TIMEOUT = 50;
 
     // If we resume the acitivty with in RESUMEABLE_TIMEOUT, we will keep playing.
     // Otherwise, we pause the player.